Katy Perry TICKS OFF Beatles Fans [Video]

She kissed a girl and she like it. We all know this. But, she also changed the lyrics to a classic Beatle song and the fans didn't like it.

Sunday night, CBS showcased the “The Beatles: The Night that Changed America – A Grammy Salute,” Basically a bunch of peeps singing and paying tribute to the best  band ever.

So, when Katy Perry came up sing the classic 'Yesterday' she changed the lyrics from 'boy' to 'girl' .  This isn't the first time a artist has changed the gender of a song. But a Beatles song? To me, no big deal, but the Beatle fans are not happy as twitter went a little cray after the performance. I thought the performance was done well and 1 word really is no big deal or is it?