Terms of Use
Last changed 9 November 2026.
Headbang is a calendar a band keeps: rehearsal nights, gig dates, and who is coming to each one. These are the rules for using it. They are written in plain words rather than legal ones, but they are still the agreement you make when you tick the box at sign-in, and the time you ticked it is recorded on your account.
Who runs this site
Ivan Arsic (arsa3d.dev@gmail.com) runs it. Write to them about the things only they can settle: a rule you think is wrong, or a page you want changed. Everything about your own account you can do yourself, on the Settings page.
Your account
One account per person, signed in with your own Google account. Do not hand a signed-in browser to somebody else, and sign out on a machine that is not yours: a session cookie is a key that fits without asking. You pick a username the first time you arrive, and you can change it later in Settings.
Names
Your username is how a band's admins add you, so pick one people will recognise. Do not pick a username, or name a band, after somebody else or after a band that is not yours. A username cannot be taken from somebody who already has it, and one username is one account.
Band names are not exclusive. Two bands on this site may be called the same thing, and so may two of your own: a name is there for a band to recognise and not for anybody to hold a claim on. Two bands with the same name look alike everywhere a name is drawn - the strip at the top of every page, your dashboard, a band's own heading, a notification about one of its events - and what tells them apart is the address in your browser, which is also what a link to one of them points at.
Events
Anyone in a band can book its rehearsals and gigs. Whoever booked an event can delete it; a band's admins can delete any event in that band. The title, the kind, the day and the time are settled once a thing is booked, because a tick means "I am coming to that day", and moving the day would quietly change what other people promised. The note on an event is the part that can still be rewritten, and only by the person who booked it or by an admin.
Book things that are actually happening. A band's calendar is only worth as much as the band trusts it.
Behaviour
Keep what you write about the event: the place, the time, what to bring. Do not use the notes, the member list, or the notifications to insult, threaten, or spam anybody. Do not try to see data you are not in the band for, and do not hammer the site with automated tools.
Bands, and leaving one
Whoever creates a band is its first admin. An admin adds and removes members and decides who counts as active, which is what an event waits for. You can leave a band yourself; your place in it goes, and so do your ticks on its events, while what you booked stays with the band. An admin can take somebody out of a band.
Whoever created a band is not able to leave it: the choices there are deleting the band, or deleting your account, which hands the band to whoever joined it first. And leaving a band is not the same thing as deleting your account - leaving leaves what you booked in that band on its calendar, deleting your account takes it out.
No promises
This site is provided as it is, with no promise that it will always be there or that nothing will be lost. It is not a booking service, and it is not a contract between band members. If a night matters, tell the band as well as writing it here. Whoever runs the site is not responsible for what a band decides to do, or for rehearsals that get cancelled.
Ending your account
The bottom of the Settings page has a Delete account button. It is the only way to delete an account, and nobody has to be asked or told: press it, confirm it, and the account and everything on it is deleted in that moment. Sign out is not delete - it keeps the account for the next time you arrive.
What goes is the account itself, everything you booked in every band, every tick you left anywhere, and every browser you switched notifications on for. A band you were only added to carries on without you. A band you created carries on too whenever somebody else is in it, with its name, its members, and its calendar intact, and whoever joined it first runs it from then on; a band that was only you goes with you, along with its events. Your privacy page lists what is kept, and the Settings page prints those same counts next to the button before you press it.
There is no undo, and no period in which it can be brought back. If you sign in again with the same Google account afterwards, that is a new account with nothing on it.
If these rules change
The date at the top of this page changes with them, and the version standing on the site is the version that applies. They are written short so that reading what changed is actually possible. What does not change is the point of the whole thing: this is a band's calendar, and the rules exist so the band can trust it.