Very literary song first appearing in electronic game (9)
I believe the answer is:
solitaire
'game' is the definition.
(solitaire is a kind of game)
'very literary song first appearing in electronic' is the wordplay.
I cannot quite understand how this works, but
'very' could be 'so' (both can mean 'extremely') and 'so' is found within the answer.
'literary' could be 'lit' (short for literary or literature) and 'lit' is located in the answer.
'song' could be 'air' (air can mean a piece of music) and 'air' is located in the answer.
'electronic' could be 'e' (as in e-mail or e-books) and 'e' is found within the answer.
No letters remain.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for solitaire that I've seen before include "Card game for one player" , "recluse" , "Board game played by one person" , "Patience game" , "Patience of Americans" .)