The Wurzels, best known for their 1976 hit 'Combine Harvester', will perform at a fundraiser for Somerset Accident Voluntary Emergency Service (SAVES).
The 'scrumpy and western' group will appear at the Somerset County Cricket Ground on 1 November.
SAVES GPs are trained in emergency medicine and respond to incidents in their own cars, equipped with flashing lights and sirens.
SAVES GP volunteers Dr Ed Ford (left) and Dr James Hickman (Photo: Somerset County Gazette/Rex Features)
GP volunteer Dr Ed Ford said: 'SAVES is 42 this year. It has helped thousands of people. As a registered charity, it depends entirely on the generosity of local people.
'SAVES currently relies on just three doctors to cover Somerset's vast rural and urban countryside and needs to recruit and train new doctors.
'It costs £4,000 to £5,000 to train and equip one doctor and this is why we are again calling upon the generosity of Somerset people to support our fundraising evening with The Wurzels.'
Tickets are £45 and include a glass of wine and a three-course meal. Call Jackie Collings on 07886 630388 or email fundraising@saves.org.uk.
