Totally agree.
For me, music is one of the biggest factors in games. In my opinion, bad music can really impact a game negatively.
Good music, on the other hand, brings a whole new dimension to gaming. When I experience nostalgia, it's usually from the music, not the actual gameplay.
I anchor thoughts and feelings to music, so when that same music played back after many years, those same thoughts and feelings come back and it brings with it an amazing opportunity to reflect, almost like the same way meditation does.
That's why with my own hack, custom music is a must. So I became a musician. I took the time to learn how to create, edit and insert custom tracks to give the game that extra dimension I felt as a kid, and again years later.