Clio with plea confusing another Muse (8)
I believe the answer is:
calliope
'another muse' is the definition.
'Calliope' can be an answer for 'muse' (I've seen this before). I am unsure of the 'another' bit.
'clio with plea confusing' is the wordplay.
'with' is a charade indicator (letters next to each other).
'confusing' indicates anagramming the letters.
'clio'+'plea'='clioplea'
'clioplea' is an anagram of 'CALLIOPE'.
Can you help me to learn more?
(Other definitions for calliope that I've seen before include "One of the Muses" , "Greek Muse of eloquence and epic poetry, or a kind of organ" , "One Muse" , "something powered by steam" , "source of inspiration?" .)