Credits:I'm Def

From This Might Be A Wiki

Credits for "I'm Def"

Artist: They Might Be Giants
By: They Might Be Giants, TMBG Music (BMI)
Licensing: BMI
Released: 1985
Recorded: 1984

Vocals

Lead Vocal: John Flansburgh
Backing Vocal: Unknown Dial-A-Song caller

Instruments

Keyboard: John Linnell

Production

Produced By: Bill Krauss