Mega Man 2 will never be dethroned. Just flat out the best single OST ever.

https://youtu.be/fFsr1tcpEvE?si=ONQVBxBGCb5i1tDs
https://youtu.be/uQXA9RkC_-c?si=GVWFLE17-CnGy4Y7

Chiptunes, remixes, orchestra versions. Doesn't matter. GOAT