Ingrid possibly ignoring fellow composer (4)
I believe the answer is:
berg
'composer' is the definition.
(20th Century Austrian composer)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for berg that I've seen before include "Mountain (in German, South African)" , "Alban -, composer (Wozzeck, Lulu)" , "Viennese composer" , "Large mass of floating ice" , "feature of icy waters" .)