Unknown Super Game Boy music?

[MaxiBash]

While I was at my cousin's house, we went on to play some Super Game Boy. While Tetris was inserted, I lost, plugged out the game, the SGB glitched out and this unknown music started playing...

https://instaud.io/2wpi

Sorry for the audio in the background of stuff moving, I BLAME MYSELF FOR THEIR BEING AIR IN THAT ROOM-
Also, I had to Bass Boost it so you don't have to turn up your headphones to a level that might instantly kill your ears.

For those wondering, this is what happend:
I inserted Tetris into the Super Game Boy,
turned it on,
played it,
lost the game,
took the game out on purphose (and no I wasn't pissed),
and then the music started playing with some glitches on the screen, but nothing happend on there.

 

[Deleted User]

It appears that the jingle you heard is just the credits theme for the Super Game Boy. You can access this credits screen via a cheat code.

Not sure what you did to the Super Game Boy, but it got the credits theme to play, for some reason.

 

[MaxiBash]

I just took out the Tetris GB cart at the correct time.
I also read this on TCFR, but they never said it could only be accessed by a cheat code, tho.