As so often seems to happen, I find myself stuck on one final clue which no-one else has asked about. What that says about me, I have no idea! Most of the others asked about I already got myself.
6d: "Release a Feanch piano, say" (5) u-p-g Presumably un..something, but I can't get it. Could it be unpeg? But that doesn't seem to fully fit the clue.