We couldn't find any words for the clue “Big band - (time span after the Jazz Age)” but these descriptions might be helpful:
- Bogland (= SWALE)
- Brigand (2 words, e.g. BANDIT)
- Disband (2 words, e.g. BREAKUP)
- Ribband (= RIBAND)
- Riband (2 words, e.g. SASH)