Forceful ballad about traveller on vacation and a vacant room (9)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

( SONG [balled] containing [about] TR [ letters remaining in T RAVELLE R when the central letters RAVELLE are removed [on vacation]) + A + RM ( letters remaining in R OO M when the central letters OO are removed [vacant])