The violin part, is seems, is bell-like (5)
I believe the answer is:
belly
'the violin part is seems' is the definition.
I can't tell whether this defines the answer.
'bell-like' is the wordplay.
'like' becomes 'y' ('y' can be similar in meaning to 'like').
'bell'+'y'='BELLY'
'is' acts as a link.
Can you help me to learn more?
(Other definitions for belly that I've seen before include "Tummy" , "Abdomen" , "Stomach" , "Corporation" , "Paunch" .)