Fails to respect group on the rise opening with instrument (8)
I believe the answer is:
violates
'fails to respect group' is the definition.
I can't tell whether this definition defines the answer.
'the rise opening with instrument' is the wordplay.
'the rise opening' becomes 'tes' (I am not sure about this - if you are sure you should believe this answer much more).
'with' says to put letters next to each other.
'instrument' becomes 'viola' (viola is a kind of instrument).
'tes' after 'viola' is 'VIOLATES'.
'on' acts as a link.
Can you help me to learn more?
(Other definitions for violates that I've seen before include "breaks" , "Disregards a law" , "abuses" .)