Katy Perry praises 'genius' John Mayer

english music star ''Katy Perry''

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 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.

IANS