Topic: What on Earth is Retro BGM 7?

I've been playing quite a bit of Dragonball FighterZ lately, and I never really bothered trying to select the music to play because I had my trust in the "auto" button. But, one day I decided to picl the music and I noticed two things. First was the character themes, next was a song called "Retro BGM 7". Now, if we're being honest it's not that good but that is besides the point. What I would like to know is what does the "Retro" bit mean and where is the song from?

Since retro is the word for older games, I imagine it's music from an older DBF ....