The hospital radio station that puts smiles on sick children's faces throughout Queensland is celebrating 25 years of being on air.

Radio Lollipop is a not-for-profit organisation powered entirely by volunteers.

It began in 1990 at the Mater Children's Hospital in Brisbane and now also entertains children at the Lady Cilento, Logan and Gold Coast hospitals.

Belinda Goode was a patient at the Mater Children's Hospital when she was 10 years old before becoming a volunteer for the station.

"When I was there Radio Lollipop would visit me and I was able to request songs, they gave me a T-shirt and I entered competitions," she said.

"It was really fun despite being in hospital."

Radio Lollipop chairman Michael Gilbert said the station had come a long way.

"We now have more than 50 dedicated volunteers in Brisbane which allows us to run our radio show and play service Monday to Saturday and offer children unable to leave their bedsides a visit," he said.

Ms Goode had to return to hospital due to illness when she was 11 and said the radio station made it easier to come back.

"When I had to go back into hospital I wasn't as scared as I was excited about Radio Lollipop and the thought of requesting more songs," she said.

Radio Lollipop's 25th birthday celebration at Lady Cilento Children's Hospital. ( Supplied: Radio Lollipop )

"Even though I was sick and in hospital, it took my mind off things and it made a really scary experience of being in hospital far less scary.

"You forgot you were sick and in hospital and it was new, exciting and fun and something we had never seen before."

Ms Goode said she would sit in her hospital bed waiting to hear her requested song being played on the station.

"You were so excited at the idea of being on radio and hearing your songs," she said.

"There were lots of children in my ward who would sit in bed and wait to hear their song and were so excited to visit the studio."

From patient to volunteer

Inside the Radio Lollipop studio in Brisbane. ( Supplied: Radio Lollipop )

When Ms Goode finished university she decided to undertake volunteer work at Radio Lollipop.

"I thought it would be amazing if I could have the opportunity to give back as I had benefited from their amazing work," she said.

"I did the training and became a volunteer and it was great ... I loved it."

Ms Goode said the volunteer team stages activities and takes craft to the children's wards, as well as play with them at their bedsides.

"As volunteers we would often dance ... sometimes quite badly to songs when they were visiting the children," she said.

"It's so important to the hospital."

Disney tops most-requested songs

Radio Lollipop's top 25 song requests by patients in 2015: 1. Frozen Cast - Let it go 2. Taylor Swift - Shake it off 3. Frozen Cast - Do you want to build a snowman? 4. Pharrell Williams - Happy 5. The Wiggles - Hot potato 6. Mark Ronson & Bruno Mars - Uptown Funk 7. Wiz Khalifa - See you again 8. Taylor Swift - Bad Blood 9. Tegan & Sara - Everything is Awesome 10. Various Artists - Twinkle Twinkle Little Star Supplied: Radio Lollipop

Ms Goode said Disney movie songs were always quite popular with the children.

"I loved Beyonce when I was working at the station and often when children would request it we would dance to it," she said.

She said she hoped Radio Lollipop would remain an important part of Queensland's children's hospitals in the future.

"It's not just the music, it's the volunteers and it's the fact that the children can interact with someone and ring up and request a song and talk on the radio," she said.

"I hope it continues for at least another 25 years as it makes a scary hospital stay fun for the children."