I am beginning to feel like BertieButton about this crossword!
I am stuck on two.
11a A short composition for solo instrument(s) ... - H -C -R -I - O
13a An interpretation, especially Biblical. I have E - E - E - N -. I think the word is EXEGESIS. If so my 4 down is wrong as I have SINTHINE.
Help gratefully received. Many thanks Free-thinker