A Madness and Two-Tone tribute act will be headlining Music in the Park.
The Skasouls UK will be joined in Elms Park on May 4 by more than 30 acts covering rock, folk, rap, dance, big band, choir and even a harpist.
Real ales and a range of food will also be available on the day at a number of stalls as well as activities for children from midday to 9pm.
Tickets are on sale now across town at Vintage & Modern Guitars, Fore Golf, Cross Keys, The Falcon and Thame Town Hall or online at www.wegottickets.com/event/265557.
Advance tickets for adults cost £7 and for £4 for students, under 18s and senior citizens. A family ticket (two adults and up to three concessions) is £20.
On-the-door prices are £10, £5 and £25 respectively. Under fives go free.
For more information visit www.musicinthepark.org.uk