Hi Nicki
For 7 d I make it usual 1 letter for “old” , 4 letter essential part of dragon, inside a 4 letter word for a contemporary, definition is music lover……that’s my guess anyway :-)
10 was my LOI because I belatedly switched the first letter from "S" to "T" after a PDM. Rated as COD because it's a homophone for another (2 words) way of expressing 13...very devious by Paul!