Rave tribe ask about Ecstasy sudden deaths (9)

'sudden deaths' is the definition.
I know nothing about this answer so I can't judge whether it can be defined by this definition.

'rave tribe ask about ecstasy' is the wordplay.
I cannot quite understand how this works, but
an anagram of 'tribe' is 'tiebr' which is located in the answer.
an anagram of 'ask' is 'aks' which is present in the answer.
'ecstasy' could be 'e' (informal term for the drug) and 'e' is found within the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?