The Black Diamond is Northampton town centre's flagship live music and events venue, an art deco-themed room inspired by the glitz and glamour of the 1920s. By day a restaurant, by night it transforms into an entertainment hub hosting live bands, tribute and decade nights, open mic sessions, singers and comedians across a spacious dancefloor. Upmarket but unpretentious, it's the town's go-to for a glamorous night of live music.
Semilong · Every Tuesday · Free
The Black Diamond Open Mic
Northampton's weekly open mic night at The Black Diamond, hosted by Chris and Dave.
Open mic at a glance The Black Diamond · Northampton
Tuesday
Open mic night
May 2026
Listed since
26 Jul
Last verified
Free
Entry
—
Sign-up time
Community
Listing status
Run a Northampton open mic? List it free — verified within 48 hours
Last updated: 2 June 2026
The Black Diamond Open Mic — Quick Facts
Northampton's weekly open mic night at The Black Diamond, hosted by Chris and Dave.
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The Details
Everything you need before you turn up
DayTuesday
Start20:00
Sign-up walk-in
Slot length–
EntryFree · 18+
Capacity–
Performer typesMusic
Sound engineerBYO / hire on the night
View on map
Where
The Black DiamondLower Harding St
Semilong
Northampton NN1 2JL
Semilong, Northampton — check venue website for parking and nearest station.
Highlights
Free entry for all
PA system provided
Walk-in sign-up
Music welcome
How do you rate this open mic?One tap, no sign-up required.
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About The Black Diamond
About This Open Mic
Every Tuesday in Semilong, Northampton
Kicks off at 20:00
Free entry for performers and audience
Slot length — we’re on it, no info yet
PA provided — BYO instrument
Part of the Northampton open mic directory
The Night
The Black Diamond on Lower Harding Street is a striking art-deco events and live-music venue in Northampton town centre — an upmarket space combining dining, entertainment and private hire — that advertises open mic sessions showcasing local talent alongside tribute acts, theatre and themed nights.
Sign-up process No current recurring open-mic date is published: the venue's whats-on calendar and ticket sites list no upcoming open mic sessions, so check bdiamond.co.uk or the venue's socials before travelling.
Getting there Lower Harding Street, NN1 2JL. Located in Northampton town centre.
The venue Art-deco themed events venue (500+ capacity for private hire) rather than a traditional pub. 18+ age policy. Full PA system provided for performers.
What's on stage — equipment and backline at this venue, verified regularly.
PA + monitors
Drum kit
Guitar amp
Bass amp
Keys / keyboard
2 vocal mics
In-house engineer
The Night at a Glance
How The Black Diamond’s Tuesday night runs.
20:00Kick-off
16:00Venue closes
Every Tuesday Free entry
Find The Black Diamond
Lower Harding St, Semilong, Northampton NN1 2JL
Planning Your Tuesday Night
Arrive early to sign up for a slot. Entry is free and the open mic typically runs until late. A PA is provided — bring your own instrument and amp.
Part of the Northampton live music scene.
What should you charge for paid gigs?Most open mic musicians are ready for paid work sooner than they think. Check live UK rates by role, city, and venue size.
Try the Rate CalculatorCommon Questions
Seven things people ask before turning up at Northampton's The Black Diamond open mic.
Walk-in sign-up only, opens at . Arrive early — slots fill on the night. See other Northampton open mic nights for alternatives.
PA + vocal mic provided. BYO instrument and amp.
Slot length varies — check with the host.
Yes — free entry for performers and audience. Most Northampton mics are free; browse the list.
Solo and duo acts work best given the gear available; ask the host before bringing a full band.
Lower Harding St, Semilong, Northampton NN1 2JL.
Mostly fellow musicians, friends and Northampton regulars across the Northampton open mic scene. Northampton open mic crowds tend to listen attentively.
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