KT Tunstall rounded off what has been hailed a "very successful" Brecon Jazz Festival on Monday night.
KT Tunstall's Brecon jazz gig has been delayed
The Scottish singer-songwriter was due to perform at the end of last week, but a promotional tour of Australia delayed her appearance, said organisers.
Meanwhile, there were 20 arrests over the weekend, double the number made last year, although police said incidents of disorder had fallen.
More than 20,000 tickets were sold for the 22nd annual three-day event.
Plans for a new winter festival in November 2006 have also been unveiled.
Festival marketing officer Lee Collins said: "It was very successful. We say this every year, but we out-stripped previous years' ticket sales so we're very, very, happy.
"Based on this year's success, we think we may have a second jazz festival in November 2006 which will be a smaller, more intimate event based at Theatr Brycheiniog in Brecon".
Scott Hamilton playing sax at the festival last Friday
Tunstall, nominated for the Mercury prize for her hit album Eye To The Telescope, will round off the festival later than expected at Brecon's Market Hall on Monday night.
"Tonight's concert is a festival performance, but KT Tunstall couldn't perform last week. The festival has ended but we decided she could appear on the Monday after".
Dyfed-Powys Police said there were 20 arrests, compared to 10 in 2004, although more people had visited the town over the weekend than the previous year.
Another six people were issued with fixed penalty notices for disorder and officers made five separate seizures of drugs, said a force spokeswoman.
She added: "Brecon police report that this year's festival has been a success in terms of the reduction of disorder within the town".
However, recorded crime for incidents such as theft was up from 20 last year to 36.
Music fans travelled from across the UK for the 22nd festival, which opened on Friday.
Highlights included Georgie Fame, the Count Basie Orchestra, the Dizzy Gillespie Alumni All-Star Big Band, Jools Holland and Lucie Silvas.
The curtain-raiser to the festival was a concert on Thursday by Neath-born Katherine Jenkins, who performed with the National Chamber Orchestra.
The singer, whose CDs have been topping the classical charts, is the latest big name from outside the jazz world to perform at the gala show. First Minister and jazz fan Rhodri Morgan officially opened the festival on Friday, ahead of sell-out gigs by Holland.
The Welsh Assembly Government contributed £90,000 to this year's festival.
During the festival, several acts paid tribute to US saxophone legend Charlie Parker, marking the 50th anniversary of his death.