Watch Rebecca Black Perform "Friday" on 'Tonight Show with Jay Leno'

Rebecca Black appeared on The Tonight Show with Jay Leno last night to perform her hit song "Friday." But her appearance was more for the interview than the song.

OK! NEWS: REBECCA BLACK GETS READY FOR TONIGHT SHOW; PRAISES NICK JONAS FOR "FRIDAY" COVER

Rebecca's YouTube video of "Friday" has 36.5 million views, but a lot of the attention to her song has been negative and plenty of people have been making their own parodies of her video.

"I think they can either be really hilarious and make me laugh like 'til I cry, but others are really lame," Rebecca told Jay Leno of the parodies.

And Rebecca revealed to Jay that she's donating the money she's making from all the attention her song has received to Japan and her school.

OK! VIDEO: WATCH NICK JONAS SING REBECCA BLACK'S "FRIDAY"

Jay then asked Rebecca if she wanted to sing her song and gave her mic. Unfortunately, the music started before Rebecca was ready, which seemed to show she was only singing along to the track.

But it was still a cute performance!

And the highlight for Rebecca's night on the show may have been Jay's other guest of the night, Bradley Cooper.

Rebecca Tweeted, "ASDFGHJKLKIOP I JUST MET BRADLEY COOPER. OMG. I almost fainted."

OK! VIDEO: WATCH CONAN O'BRIEN COVER REBECCA BLACK'S "FRIDAY" WITH HIS NEW HIT "THURSDAY"

Watch Rebecca interview & performance below!