Tip: Switch palace switches normally disappear if you replay the level. However, if you insert them as direct Map16 and use the hex-edit at $00EEB2 in the ROM map, you can replay the level without a problem.
(Sampled) Victory music from SMRPG, suited as a stage/boss clear song.
Note that you'll not be able to use it as a global song without some extra effort (and also the samples are very large, so it's unfeasible).
Requested by FedoraFriday.
Update: moved this version to a separate submission.