Not sure. I know they both like Rihanna's music but they don't know much else about her.
I watched a rihanna interview with my mum a few years ago and she said some positive things, she said that she admires rihanna's resilience and that she seems like a nice girl.
Just my mom, my dad doesn't listen (he likes heavy metal )
Bastille: Yes
Gaga: After SXSW I'm not sure
Disclosure: Yes
Example: Yes
Avicii: Yes
Calvin Harris: Iffy
Yes I just started hearing her sing lines from Katy's songs like "Supernatural...", "Unconditional", and "You're gonna hear me roar!" and "Tonight, tonight I'm walking on air"...And she's watched all the PRISM era music videos, knows about Who You love and John and Katy
I know my mom likes Nicki for sure and I ignore my dad's failed attempts at shading her because he hasn't listened to enough of her music to have a valid opinion.