Running an open mic that people come back to

Open mics fail one specific way: a room of performers waiting their turn, no audience, energy of a dentist's waiting room. Everything that works about a good open mic is a defence against that failure mode.

Signups: the system is the culture

• Pre-book half the slots online, keep half for walk-ups — reliability plus serendipity.
• Slot length by scene: music 2 songs/10 min; comedy 5 min tight. Enforce with warmth and a visible light/signal.
• Cap the list and publish the cap. A 20-slot night that ends at 22:30 beats a 35-slot death march every time.

Solve the audience problem structurally

1. Every performer's slot confirmation says 'bring two' — and the ones who do get earlier slots next time. Say this openly; it's the economy of the night.
2. Programme one modest booked act mid-evening as an anchor the general public will come for.
3. £2–£3 entry (or performer-free, audience-pays) filters in intent and funds the PA — see the no-show maths in reducing no-shows.

Host craft

The host resets the room between every act — names learned, energy restored, the bomb absorbed with grace. Keep a visible running order (screen or chalkboard), start on time to train the culture, and close with next month's date spoken aloud. The night's consistency is the product; performers tolerate a rough crowd, never a chaotic list.

The modest economics

A £3-entry, 60-head night grosses £180 — PA rental, host's beers and a float, roughly. The upside isn't the door; it's the pipeline: your open mic feeds your showcase night, builds the list, and makes you the person acts owe favours to. Run the door on a zero-fee platform and the £180 stays £180 — at this scale a 59p fixed fee is a 20% tax.