Forceful ballad about traveller on vacation and a vacant room (9)
I believe the answer is:
strongarm
'forceful ballad' is the definition.
I know nothing about this answer so I cannot tell whether this works.
'traveller on vacation and a vacant room' is the wordplay.
'traveller on vacation' becomes 'strong' (I can't justify this - if you can you should give a lot more credence to this answer).
'and' says to put letters next to each other.
'vacant' means to remove the middle letters (a vacant or emptied out form of the word).
'room' with its centre taken out is 'rm'.
'strong'+'a'+'rm'='STRONGARM'
'about' is the link.
Can you help me to learn more?
(Other definitions for strongarm that I've seen before include "Show violence towards" , "Bullying" .)