How do I solve 14 down in Daily Telegraph Cryptic 31238?

Question

Accepted Answer

14 down reads "Extemporised notes of stereotypical WI meeting?" (3,7 letters); the answer is JAM SESSION. It's a charade: the answer breaks into parts in clue order, each part clued by a word or short phrase. No indicators needed; watch for standard abbreviations (RA = artist, US = American, IN = at home) and short synonyms. The full step-by-step breakdown is on this page.

Extemporised notes of stereotypical WI meeting? (3,7)

14D — Extemporised notes of stereotypical WI meeting? (3,7) — JAM SESSION