Gaga will have two number ones and a top 5 and 10 hit. The album will sell 8,000,000 with a repackage which will sell 1,000,000 as an individual album.
Girls' Generation will have 2 top 5 hits and another one off th same album in 2014 which will sell 2,500,000 worldwide.
I feel like ARTPOP's lead single will be blocked by this, which will be an absolute streaming monster:
Other than that, she'll probably have two top tens (6 and below) and a flop, which will lead to Interscope killing single promotion, and the ARTPOP era will end with sales just short of 2M.
Katy should get at least two number ones on the Hot 100.
Bar any competition, Paramore should also get their first number one album with their self-titled fourth effort.
Beyonce's first single won't be that big but her 2nd single will but none of them will go to #1, her album will go to #1 and will open up with about 300-400k+
Taylor will score another #1 on the Billboard Hot 100 with 'I Knew You Were Trouble' as well as going back to #1 with her album 'Red' for a few more weeks at the start of the year with the album selling 4 million by the end of the year in the US alone and having the top tour of the year.
GaGa's first single will reach #2 and will be blocked by someone but will score at least 3 top 10s from the ARTPOP era with the album selling 4-5 million WW.
Katy will come back with a bang in July-August with the first single going to #1 for about 5-6 weeks, having one of the top songs of the year and the album going to #1 opening with 200-300k.
Mariah Carey's new single will only be a moderate hit in the US and will flop WW as well as her album.
Olly Murs will find some success with his single 'Troublemaker' but his album will flop
Britney Spears will be topping the charts once again with her lead single and debut at #1 in the Billboard Hot 100. Her new album will sell 5 Million Copies at the least.
Beyonce will release a documentary about mothering. Her new album will hit an even more mature note than 4 had.
Gaga will release an HBO special. Her junior release will be respectable. Her and Taylor will break up amid rumors of his infidelity.
Katy will release a summer hit, only to be surprised that Summer 2013 is One Direction's. Her album lacks a distinguishing feature her previous works attained.
Honestly, from the mistakes her team made in the FF Era, I think that she will have a huge era in 2013. Oh well, a Britney stan can dream right? I really just hope for the best and 5 Million with Proper promo and with the name "Britney Spears" is VERY possible.
Beyonce will have the biggest hit of her career, her album will outsell '21', her tour will be a smash (over 250m gross), also she will get 2 more film roles, while her first animated movie will hit #1.
'Artpop' will sell 10+ million, at least 5 #1 singles, few more top 10 hits. GaGa will top Forbes again.
Katy Perry will have her first huge WW album, she will have many hits, but not as many #1s as with TD. Generic public and critics will start to take her more seriously. Her album will be acclaimed and 'Wide Awake' will give her a first Grammy.
Britney will slay the charts with 'Scream & Shout', release her lead single in September-October. It will smash too. Her album will have at least 3 times more sales than FF.
Rihanna will finish her career, because 'Unapologetic' won't even sell 1.5 million WW, all singles will flop, 'Diamonds' won't even go 2x plat. The tour will be canceled due low sales. Chris will beat her again and go back to his ex girlfriend (Kea?..)
Beyonce will give a electrifying performance at the Super Bowl. It will receive universal acclaim. Her lead single from her fifth album will benefit from the success of the Super Bowl resulting in a 1 on the Billboard Hot 100. It will stay 1 for 2 weeks. The song will be similar to Halo. She will announce a worldwide tour starting in Europe in the summer and in North America in the fall. The ticket sales will be good but not great. She will release a second single just before the release of the full album and that song will be more uptempo. It will be produced by Max Martin and be one of her biggest songs of her career. The album will debut at number one in early April. It will sell more than 400,000 copies. She will promote the album heavily. She will always be on TV.
Britney will not return for a second season of The X Factor because they will not offer her enough money to make it worth her while to come back. She will begin work on a new album that will be much different that her previous ones. It will be more Pop Rock and R&B. It will still have a few dance songs. Her first single will debut in the Top 5. It will have legs and stay in the Top 10 for a few weeks. The song will be midtempo and will feature Britney's vocals. The album will drop in November. It will debut at number one with 250,000. She will release her second single that will be classic Britney and will be a huge hit in the following year. She will announce a tour that will start in the Spring of '14. She will stay engaged to Jason until the fall when she will break up with him.
Katy Perry will release her third album in early September. It will be darker and more personal than Teenage Dream. The album will receive more acclaim than Teenage Dream but will not be as successful. Her first single will be in the Top 3. It will continue the sound sonically of Wide Awake. The album will debut at number 1 with 225,000. She will promote the album with a few interviews and performances by will seem quiet compared to the Teenage Dream era. This album will shut up the naysayers and prove that she is more than a flash in the pants pop star.
Lady Gaga will release her first single in February. It will be a return to form for her. It will be more Fame Monster than Born This Way. The song will be number one for weeks. The video will be iconic. The album will debut at Number One with just under 1 million in sales in late May. She will be on every TV show and each performance will be amazing. She will be the number one pop star for the year.
Rihanna will have a more stripped down tour that will showcase her voice more than her performance. It will be be a huge hit with her fans. She will release a few more singles from her new album. 2 of them will be Number One hits. The others will be in the Top 10. She will not release a new studio album this year. Her tour will be not as big as Loud but do better in sales than Beyonce's. She will continue dating Chris Brown. She will leave Island Def Jam and join the roster of Roc Nation.
Avril Lavigne new album will step outside of the pop world and lean more towards alternative. The album will have a longer shelf life than Goodbye Lullaby. It will debut in the Top 5 with 115,000. It will produce no Top 10 singles. She will not tour this album. She will break off her engagement to Chad Kroger.
Mariah Carey will do an incredible job as judge on American Idol. Though the show will still fall in the ratings. She will release a more pop sounding lead single. It will peak in the top 3 of the Billboard Hot 100. The album will debut at number 1 with just under 200,000 in sales. She will tour in the summer in theatres and casinos. The tour will be a modest success at best in ticket sales. She will break up with Nick Cannon.
Jennifer Lopez will take time off from music to focus on acting. She will start filming a new drama that will get Oscar buzz but it won't come out to the following year.
Shakira will not connect with viewers on The Voice. This will be her only season. She will not release a new album this year.
Justin Timberlake will announce in the new year that he has been in the studio working for the past few months on a new album. His first single will be released in September and will be a very different sound from his past two albums. It will still be a massive success though naysayers will say they want the old Justin to come back. The song will be number 1 for a few weeks and the album will debut at number 1 with just under 700,000 in sales. He will announce a tour before the new year and ticket sales will go through the roof. He will change the tour venues from arenas to stadiums.
Christina will not tour Lotus. She will come back for a fourth season of The Voice in the fall. No music plans will be announced.
Kelly Clarkson will not release a new album this year but will be featured on a Top 10 song.
Taylor Swift will have two more number one singles. They will both stay at the top for a few weeks. Her tour will be massive. She will keep floating more into the pop world instead of country after the success of her pop leaning singles.
Nicki Minaj will be criticized for her music knowledge as a judge on American Idol. She will continue to be portrayed as narcissistic. This will be her only season on American Idol. She will release a new album before the end of the year. It will be more Hip-Hop than Pop. It will debut in the Top 5 with under 100,000 in sales and have no Top 10 singles.
Demi Lovato will return for a second season of The X Factor in the fall. She will continue working on a new album that will be released to coincide with the X Factor. It will debut in the Top 5 with 150,000 and produce her first Top 3 single. The album will be loved by her fans and critics. It will include more R&B Pop songs compared to her last albums.
Miley Cyrus will return to the music scene will so-so success. Her lead single will debut in the Top 10. She will release a new album in the summer than will debut in the Top 5 with 125,000 in sales. The album will be a mixture of Country and Pop. She will release a country single that will do very well on that format but will not appear on Top 40 radio. She will break off her engagement to Liam Hemsworth after a cheating scandal. She will be announced as a judge on a singing competition show.
Rihanna will release another album and get more #1s
Britney will get another #1 and more top 10s
Beyonce will perform the Superbowl and deliver an amazing performance. Her lead single will go #1 and meltdowns will occur.
Ciara will have moderate success with some urban hits
Mariah will get a top 10 single
Katy will get more #1s
life goes on
Beyonce's Super Bowl performance will be very well received. Her lead single will go top 5, but the rest of her next era will perform like 4.
Adele will not release anything in 2013, sparing our faves.
Gaga's lead single will go #1, but she will only sell 500K copies in her first week. She will have two more top ten singles afterwards.
Britney will not release a new album in 2013, she will be back on X Factor.
Nicki will go back to her hip-hop roots. She will release multiple urban singles prior to releasing The Pinkprint that go top twenty and then will go #1 with her album with 400K copies sold.
Kesha will have four more top tens from Warrior: C'mon, Crazy Kids, Supernatural, and Last Goodbye. Two of those songs will go #1.
Rihanna will have two more #1s in 2013: Stay and the lead single from her 8th album, which will be released in November.
Nicole will smash the UK with Boomerang and will get a #1 album there. She will have a mildly successful US single that peaks in the top 15.
Rita will have her US breakout single that goes top ten. She will then release her album stateside, but it will underperform.
Drake, Eminem, and Lil Wayne will be the biggest sellers of the year. Drake and Wayne will both sell around 900K, Eminem will do 700K.
Kanye will try to launch a music career for Kim K, but it will flop horribly and they will be the laughingstock of the nation.
Ciara, Cassie, Mariah, Gwen, Nelly, Christina & Co. will remain flopping.
Will.I.Am.'s #Willpower will be shelved.
EDIT: I knew I forgot someone. Katy will have a #1 album with 200K sold and will have three top five singles.