Garfunkel cut off Simon with ten notes in a row (8)
I believe the answer is:
arpeggio
'notes in a row' is the definition.
'arpeggio' can be an answer for 'notes' (I've seen this before). I'm not certain of the 'in a row' bit.
'garfunkel cut off simon with ten' is the wordplay.
'garfunkel' becomes 'art' (Art Garfunkel of Simon and Garfunkel).
'cut off' means to remove the last letter.
'simon with' becomes 'pegg' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'ten' becomes 'IO' (IO resembles p0).
'art' with its final letter taken off is 'ar'.
'ar'+'pegg'+'io'='ARPEGGIO'
Can you help me to learn more?
(Other definitions for arpeggio that I've seen before include "Opera gig (anagram)" , "Chord played spaced out" , "A broken chord" , "Notes of a chord sounded separately" , "Notes of chord played separately" .)