Sing in ye old style? (5)
I believe the answer is:
yodel
'sing' is the definition.
(yodeling is a kind of singing)
'ye old style?' is the wordplay.
'style?' indicates an anagram (style can mean to shape or design).
'ye'+'old'='yeold'
'yeold' is an anagram of 'YODEL'.
'in' is the link.
(Other definitions for yodel that I've seen before include "Sing using falsetto" , "Sing in Tyrolean fashion" , "Sing (in the Alps)" , "Alpine song or call" , "Sing in high trilling tone like Swiss mountaineer" .)