A coach, carrying American band Baroness, has left the A36 near Bath and plunged 30ft from a viaduct, seriously injuring two people on board.
The American heavy metal quartet are understood to have been en route to Southampton at the time of the accident after playing a gig at the Fleece in Bristol.
The band had been nearing the end of a month-long European tour which had started in Switzerland and was due to end in Germany later this week.
Emergency services were called to the A36 near Bath at 11.30am following reports a 52-seater coach had failed to stop and had left the road, plunging 30ft from a viaduct.
An Avon and Fire Rescue statement explained that when the emergency services arrived at the scene, seven passengers had already walked free from the wreckage.
The driver and one passenger were trapped inside and had to be freed.
Those who were trapped in the wreckage are understood to be seriously injured. All nine people involved in the incident were taken to hospital.
A spokesman for Baroness' British promoters, Advance Music Promotions, was unable to confirm whether their gig tonight at Talking Heads in Southampton would go ahead. He referred callers to the promoters' website and Facebook page.
Avon and Somerset Police has launched an investigation into the cause of the crash.