THE third day of the Devonport Jazz in July Festival yesterday filled the city's mall with music and admirers of all ages.

Musos in the Mall continues to be a popular attraction for festival attendees from across the state, featuring acts such as Hobart's Dixieland Express.

Although the name may conjure the image of smooth jazz aficionados, the 13-year-old festival is also growing its base for blues, according to Jazz in July marketing and tourism co-ordinator Suzy Parravicini.

Ms Parravicini said blues had been encouraged during the past three years and a style-specific event at Barringwood Estate was already sold out for today.

The concert will be played by Victorian acoustic blues guitarist Nick Charles and Queensland bluesman Doc Span.

It's the second festival for Charles, who yesterday appeared with Span at Devonport's Life Way Auditorium.

"I did the festival two years ago, but it was solo at that time," he said.

"This time I've come back with Doc Span - our show is essentially a tribute or celebration of (American blues musicians) Sonny Terry and Brownie McGhee's work."

Charles said the duo were welcomed with open arms by the Devonport jazz community and hoped to return again in future years.

For information about today's events go to www.devonportjazz.com