Whitney Matheson

USA TODAY

Anytime I can hear Mayim Bialik rap, I'm having a pretty good day.

Big Bang Theory and Blossom aficionados may be shocked to hear the actress spit rhymes on a song from 2776, a new celebrity-filled comedy album that benefits the charity OneKid OneWorld, which promotes education in Kenya and El Salvador.

Eighty-two artists appear on the record, including Patton Oswalt, Neko Case, Ira Glass, Aimee Mann, Will Forte, Margaret Cho, Ed Helms, Paul F. Tompkins and Martha Plimpton.

The song I'm thrilled to premiere, Journey to Anywhen, also features comedian Reggie Watts and Right Said Fred. In it, the trio takes a trip back to 1991, when sexy shirts, Clarence Thomas and Hudson Hawk dominated pop culture.

In the second half of the song, Bialik storms in. "Nineteen ninety-one, how I miss ya," she raps. "The days when I could have it all explained by Clarissa ..."

Album co-creator Joel Levinson tells me this about the track:

When things started rolling with the album and we realized that we were getting artists way beyond what we ever thought we'd get, we had a quick phone call and decided to each make a list of 50 absolute dream-reach musicians we'd love to write comedy for. I turned to my iTunes and added Right Said Fred. I was flabbergasted when they wrote back to us, and beyond excited.

(Writing the song) got us talking about how awesome 1991 was — or at least, how important it was to an 11-year-old. And you know who else was at the top of the world in 1991? Mayim effing Bialik. It became instantly obvious that we wanted her to rap on it. ... (Co-creator Rob Kutner) reached out to her, and she was down.

Reggie got into the studio and blew our minds with his beatboxing ... (We) sent it off to Right Said Fred in London to add the killer vocals (including the surprisingly sexy delivery of "sit in the back seat and shut the f--k up").

How great is that? The 2776 album will stream on Soundcloud starting June 24 before going on sale July 4. Learn more at facebook.com/2776album and pre-order it here.