The one writing lines left note received by stage actress (5,6)
I believe the answer is:
meryl streep
'actress' is the definition.
(I know that Meryl Streep is a actor)
'the one writing lines left note received by stage' is the wordplay.
'the one writing lines left' becomes 'meryl' (I can't explain this - if you can you should believe this answer much more).
'note' becomes 're' (as in do-re-mi).
'received by' indicates putting letters inside.
'stage' becomes 'step' (as in a step or stage of a process).
're' put within 'step' is 'streep'.
'meryl'+'streep'='MERYL STREEP'
Can you help me to learn more?
(Other definitions for meryl streep that I've seen before include "1982 Best Actress Oscar winner for "Sophie's Choice"" , "American actress, star of "Silkwood" (1983)" , "Substitute Merest reply (anag) - actor" .)