Tenor in Othello and brief series is leading Hell's Angel
I believe the answer is:
motorcyclist
'leading hell's angel' is the definition.
The definition suggests a singular noun which matches the answer.
'tenor in othello and brief series' is the wordplay.
'tenor' becomes 't'.
'in' is an insertion indicator.
'othello' becomes 'moor' (I've seen this before).
'and' is a charade indicator (letters next to each other).
'brief series' becomes 'cyclist' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
't' going into 'moor' is 'motor'.
'motor'+'cyclist'='MOTORCYCLIST'
'is' acts as a link.
Can you help me to learn more?
(Other definitions for motorcyclist that I've seen before include "road user" , "One roars along on two wheels" .)