A group performing in front of gig-goers leaving (10)
I believe the answer is:
abandoning
'goers leaving' is the definition.
'abandoning' can be an answer for 'leaving' (I've seen this before). I'm unsure of the 'goers' bit.
'a group performing in front of gig' is the wordplay.
'group' becomes 'band' (band can mean a group of people).
'performing' becomes 'on' (as in being on stage).
'front of' suggests taking the first letters (the letter at the front of the word).
The initial letter of 'gig' is 'g'.
'a'+'band'+'on'+'in'+'g'='ABANDONING'
Can you help me to learn more?
(Other definitions for abandoning that I've seen before include "desertion" , "giving up" , "Leaving" , "Desisting from using" .)