Tip: When determining a time limit, remember that players won't be as familiar with the level as you are. If you normally complete the level with around 100s left on the timer, others might run out of time on their first try.
I have not uploaded an m64 here for quite a while so here is one. This music plays after you defeat all of the enemy units and the enemy captain is remaining on the battlefield only in Fire Emblem Rekka No Ken. This was made in SEQ64.