More than anything else, poet’s first plain lyric recollected (11)

'more than anything else' is the definition.
I can't tell whether this defines the answer.

'poet's first plain lyric recollected' is the wordplay.
'poet's first' becomes 'p' (1st letter of 'poet').
'recollected' indicates anagramming the letters (letters recollected and rearranged).
'plain'+'lyric'='plainlyric'
'plainlyric' anagrammed gives 'rincipally'.
'p'+'rincipally'='PRINCIPALLY'

Can you help me to learn more?