Thousands flocked to the Tuesday Market Place last Saturday to watch the Scottish singer-songwriter perform some of her biggest hits such as Suddenly I See and Black Horse and the Cherry Tree.
As she sung Other Side of The World, the square twinkled with lights as festival-goers waved their mobile phone torches to the music.
Friday was just as busy, with The Real Thing and Kenny Thomas drawing thousands in to the town.
And more than 400 tickets were sold for the Back in the Day after-show party which was held at the Corn Exchange.
The second weekend in the festival’s diary came to a close with Tom Hinley and the Kar-Pets on Sunday.
Festival Too chairman Alan Taylor hailed the weekend as a great success for the free festival, which has been going for more than 30 years.
“Friday night was possibly one of the greatest Fridays in the festival’s history.
“The crowd was from all over the county and beyond, with fans coming from Amsterdam to see KT Tunstall.
“She said that she had been in the town earlier that day and was talking to people.
“Kenny Thomas and The Real Thing had the audience in the palm of their hands – everyone was singing and dancing. The atmosphere at the weekend was electric. The committee members and I feel this has been one of the best Festival Too concerts we have had.”