For some motivation, I sometimes hear out the whole Fighting EX Layer soundtrack along with the Street Fighter EX OST (1-3).
SF has tons of great music, but I think EX is severely overlooked as well as the idea of adapting new tracks for older characters. Maybe the SFEX Guile Theme doesn't
"go with everything" but everything is distinct and striking rather than being an adaptation of what others like Yoko Shimomura did before at best or a disaster (Juri's music in SF5) at worst.
Street Fighter 3 seems to be the only in-house SF which took some chances, though 3rd Strike ended up sharing music across some characters.