Katy Perry praises `genius` John Mayer

Updated: Sep 29, 2013, 09:29 AM IST

Los Angeles: Singer Katy Perry has praised her boyfriend John Mayer`s "genius" mind. She also says she wants to donate his brain to science and figure out "how all these sparks work".

"He literally is a genius, as is evident from his songwriting,” contactmusic.com quoted Perry, 28, as saying.

"I always tell him, `Darling, you know I`m going to have to give your mind to science after you`ve passed, because we`re going to have to understand how all these sparks work,`" she added.