The Acappelicans -a group of about 16 a cappella performers - were invited to be part of the Festival of Voices in Hobart.

The group did three performances during the festival, at the Tasmanian Museum and Art Gallery Basement, the Singers Lounge, and a pop-up performance on Saturday night's ghost tour through Battery Point.

Group conductor Kathleen Ives-Heap said the group had started small about four years ago and had been growing in popularity since.

"I'm really proud of them. A lot of them have come from diverse backgrounds, they haven't had any training in music, and they're just devoting their time and learning how to read music," she said.

"It is a weekly thing for a couple of hours. It's our Friday night thing, but when we're working towards something like we have been for Festival of Voices . . . we practise maybe two or three times a week."

The group is somewhat of a family affair for Mrs Ives-Heap; her brother Matthew Ives helps with arrangements and the occasional seminar, her husband is part of the group, and she said the rest of the Acappelicans had become "like family".

Mrs Ives-Heap said the group performed every couple of months on Flinders, but their appearance at the festival was their first venture "overseas".

She said part of the lure of a cappella singing was the challenge of blending your voice so it could not be heard above the others in the group.

"I think it's about harmonising, and it gets to the stage where you're not just putting your hand on your ear and just listening to your voice, you're sort of listening to the others and it's producing a lovely sound together and I think that's what we all enjoy," she said.