I've only listened to a few songs from her mixtapes and EP (Murda Bizness, Pu$$y, Flexin' & Finessin', Slo., and Yo El Rey.), and I loved all of them
She was on her **** during her mixtape days. Her flow and music was>>>>. I've listened to Beat Down before and it's amazing
The breakdown is perfect and it describes how I feel when I step into this base
Iggy in Moscow is the only freestyle from her that I have from her, and Leave It is the only unreleased song I own of her lol. But it's going to change soon
I've always liked Azealia, but never dove deeper into her for some reason. I've only listened to her singles and were slayed by them repeatedly
Liquorice is probably my favourite thing she's ever released.The only song from Fantasea I've ever heard was Esta Noche and I loved it. Azealia is so underrated. She could be a real threat to Nicki if she'd just chill the **** out.
I've listen to the first few tracks of Only 17 and it's good. Window and Single>>>>
Get into it
Lana has an amazing unreleased catalogue. She even has unreleased VIDEOS
She did the video album thing with "Lana Del RAY" before Bey even thought of it
Even her unreleased songs have videos haha. It's insane
Lana attempts to "rap" in her unreleased songs like Summer Of Sam and Prom Song so it'll be like listening to a depressed Kesha on an episode of Law & Order: Special Victims Unit. Kerli's is great too. Check her out as well. Death Is In Love With Me and Last Breath are good starters.
That's probably why I like them. I loved the sound of that album so much more than I do of her current material. It's like...it seemed like it had more quality and more authentic?
I'm trying to find her first mixtape but it's hard
I don't listen to any of them except Neon and Gaga
Her unreleased songs are
Rain On Me
No Way is the only unreleased song from Gaga I've heard that I love. I have Shake Ur Kirty, Let Love Down and the Red & Blue tracks but they're ok. Nothing special
Hopefully she has a plan for this case.
Not his or anyone else's fault that they have a complete thought and ATRL has the attention span of a potato 
I didn't mean Katy directly, just the sounds of the PRISM album. As you said yourself, Katy doesn't have a real defining sound (circa 2010) and thus it's not necessarily Katy's influence, just that sound. I still hear elements of TD/PRISM in 1989. 