Old tape playing contains single produced by The Chemical Brothers perhaps (6)
I believe the answer is:
opiate
'by the chemical brothers perhaps' is the definition.
I can't tell whether this definition defines the answer.
'old tape playing contains single' is the wordplay.
'old' becomes 'o' (common abbreviation eg in OE for Old English).
'playing' indicates an anagram.
'contains' means one lot of letters goes inside another.
'single' becomes 'i' (one).
'tape' anagrammed gives 'pate'.
'pate' enclosing 'i' is 'piate'.
'o'+'piate'='OPIATE'
'produced' is the link.
Can you help me to learn more?
(Other definitions for opiate that I've seen before include "of heroin, perhaps" , "Poppy-based drug" , "painkiller" , "Drug inducing a false sense of contentment" , "A poet I become on this drug" .)