To pay homage to all of the mothers out there, we’re looking back at Phish’s 7/19/91 gig in Somerville, Mass. when the band brought out a very special guest for their tune “I Didn’t Know.”

Mimi Fishman – mother of drummer Jon Fishman – jumped onstage for the song’s traditional vacuum solo, as guitarist Trey Anastasio gave her a warm introduction.

“Ladies and gentlemen without this woman, none of us would be here tonight, so please give a warm welcome to Fish’s mother,” he said.

Of course, Mimi Fishman is known to many Phish fans as the founder and namesake of the Mimi Fishman Foundation, which is a “volunteer-administered, fan-driven non-profit dedicated to raising funds for a diverse range of charitable organizations that each, in some way, touched the life of our founder Mimi Fishman.”

Check out the show’s full setlist and watch Mimi jam the vacuum solo below:

July 19, 1991
Somerville Theatre, Somerville, Mass.

Set 1: Golgi Apparatus[1], The Landlady[1] > Bouncing Around the Room[1], David Bowie[1], Fee > Cavern[1], The Squirming Coil, You Enjoy Myself[1], Gumbo[2], Touch Me[3]

Set 2: Suzy Greenberg[1] > Divided Sky[1], I Didn’t Know[4], My Sweet One, Magilla[1] > Tweezer[5], The Mango Song[1], Big Black Furry Creature from Mars[1]

Enc: Lawn Boy[6] > Runaway Jim[7]

[1] Giant Country Horns.
[2] Giant Country Horns; Fish on trombone.
[3] Giant Country Horns; Fish on cowbell.
[4] Mimi Fishman on vacuum.
[5] Giant Country Horns; impromptu rapping.
[6] Carl Gerhard on trumpet.
[7] Sung as “Runaway Yim.”