Dance around with every character, back in florid passage (7)
I believe the answer is:
cadenza
'florid passage' is the definition.
'cadenza' can be an answer for 'passage' (cadenza is a kind of passage). I am unsure of the 'florid' bit.
'dance around with every character back' is the wordplay.
'around' is an anagram indicator.
'with' says to put letters next to each other.
'every character' becomes 'az' (every letter (character) from A to Z).
'back' shows that the letters should be reversed in order.
'az' in reverse letter order is 'za'.
'dance' anagrammed gives 'caden'.
'caden'+'za'='CADENZA'
'in' acts as a link.
Can you help me to learn more?
(Other definitions for cadenza that I've seen before include "Soloist's virtuoso passage" , "One's passage" , "Impromptu insertion in piece of music" , "Virtuoso passage by solo performer" , "Elaborate musical flourish" .)