BARRY Bull has played his vintage Fender guitar for 54 years but when he strums it at Mooloolaba Surf Club later this month it will be the most important gig he has ever had.

Barry's grandson, Archer, is just 20 months old and has a severe hearing loss. The little boy received two cochlear implants when he was just six months old and, with the support of Queensland charity, The Hear and Say Centre for Deaf Children, his hearing, listening and speaking future is underway.

It costs the charity $10,000 a year to teach a deaf child like Archer and Barry wants to use his years of experience in the music industry to raise money during its "Loud Shirt Day" appeal on Sunday, August 28.

Musician, author and businessman, Barry (73) ran the iconic Brisbane record store, Toombul Music, for 30 years.

"I have a lot of memories from music and of the celebrities like Cliff Richard, Michael Crawford, and Johnny Farnham I brought to the shopping centre.

"Last year I put together a two-hour, one-man show, Unexpected Hero, which tells my life story and I sing and play songs from the that era. I've been performing it around the clubs on the Coast and I will include segments of it at the fundraiser.

"I will also be talking about the wonderful work of the Hear and Say and the miracle of a child like Archer hearing sound for the first time with the aid of a cochlear implant.

"Archer will be there and so will our family. It's 'Loud Shirt Day for Deaf Kids' so wear your loudest shirt. It's going to be great fun."

Mooloolaba Surf Club. Sunday, Aug 28. Doors open 1.30pm. Tickets $20. Bookings (07) 54441300 or online barrybull.com/concert