Singin' Salmon

"Singin Salmon" is a short song sung by an animatronic prop salmon. The Gremloblin took a strong liking to it, and rather than leave after escaping it's cage in the Mystery Shack, chose to stick around to listen to the salmon repeatedly.

Lyrics
I'm da singin' salmon, spendin' all day jammin'

Trivia

 * Singin' Salmon is a parody of Big Mouth Billy Bass.