On September 16 and 17, Cromwell and Ranfurly will join forces for their Jazz 'n' Jocks event - jazz in Ranfurly followed by rugby in Cromwell.
"Ranfurly businesses are opening for the first late-night shopping in the town since the late '70s," Project Maniototo co-ordinator Amie Pont said.
The late-night shopping would coincide with the jazz concert where Jud Arthur, opera singer and former Otago rugby player, would perform, along with a selection of local jazz entertainers at establishments around the town.
To promote the event, giant rugby jerseys have been erected in both towns. Mrs Pont said that each day the jersey would be at a different location in the Maniototo and Burn 729am listeners were encouraged to call in to tell the volunteer announcer where it was.
There would be prizes, donated by local businesses.
A bus service, costing $5 each way, will run between the towns over the two days.
Entry into both events is free.