This can vary massively – the Musician Union minimum rates are around £150 for a one-off performance with rehearsals beforehand, travel or overtime meaning extra pay. Where you are performing in bigger venues or more established in your career you can expect to get (much) more money. Many performers also build their wages through music teaching £30+ per hour or through songwriting and composing. The average wage for an early career music performer in the UK is 28K rising to 38K for later career performers. Obviously, if you land a big deal or chart massive hits then you’re looking at a whole different magnitude of pay.