Singer in bar? Back one, right? (5)
I believe the answer is:
tenor
'singer' is the definition.
(I know that tenor is a type of singer)
'bar? back one right?' is the wordplay.
'bar?' becomes 't' (T-bar is a part of a ski lift).
'back' says the letters should be written in reverse.
'right?' becomes 'r' (common abbreviation).
'one' written backwards gives 'eno'.
't'+'eno'+'r'='TENOR'
'in' is the link.
(Other definitions for tenor that I've seen before include "Male 17" , "Male singer with high-pitched voice" , "Big bell" , "thread" , "Eg, Placido Domingo" .)