Young Thai guitarist Irin Prechanvinit had just released an album and was on top of the world when the awful news came.

Her mother had been diagnosed with late stage cancer.

Irin Prechanvinit's mother was diagnosed with late stage cancer. ( ABC News: Liam Cochrane )

"I tried everything, the modern medication and the alternative treatment," Ms Prechanvinit said.

"I told doctors to provide her the best medicine they have."

But the treatment was expensive and Ms Prechanvinit decided to cash in on her most precious possessions.

"I started to sell my guitars and I thought, 'I'll keep at least one to play', but in the end it wasn't enough so I had to sell them all," she said.

The sad story reached 79-year old Australian Ray Ingram, who lives in Thailand.

"I could understand the loss of losing instruments," Mr Ingram said.

He was also coming to terms with not being able to play his most loved guitar, after a near-fatal bacterial infection left him with no feeling in his fingertips.

"I thought, 'well, I'm sure this young lady would like the guitar'," he said.

The Admira-branded classical guitar was made by German Enrique Keller in his Spanish factory, probably in the late 1940s or '50s.

The offer of the vintage guitar came the day before Irin Prechanvinit's mother died. ( ABC News: Liam Cochrane )

"I do know it's very old, my mother gave it to me when I was quite a young man," said Mr Ingram.

The offer of the vintage guitar came the day before Ms Prechanvinit's mother died.

"I know it's a gift from his mother and I know it's very important to him," Ms Prechanvinit said.

"The wood is very old and the sound is very beautiful," she said, sitting with Mr Ingram on his porch during a recent visit.

Ray Ingram has had to come to terms with not being able to play his most loved guitar. ( ABC News: Liam Cochrane )

Love until the 'end of rabbit sky'

While the old guitar gets some minor repairs, its new owner is practicing on another donated instrument, working on her next album and a fundraising concert in 2017.

The experience of nursing her mother has profoundly changed the Thai guitarist.

Together with her mother's medical team, she runs a website called Cancer Fighter, which collates information for patients in Thailand.

Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. Listen Duration: 2 minutes 50 seconds 2 m 50 s Listen to Liam Cochrane's story on AM Download 5.2 MB

She is also writing a book, to be called Mother From the End of Rabbit Sky.

"The end of rabbit sky was a secret code my mum and I used since I was a kid," Ms Prechanvinit said.

"My mum always asked me how much I loved her and I liked rabbits so much ... so when I couldn't think of something big enough to describe my feelings, I told her I loved her until the end of rabbit sky."

The strange epithet will also be the name of the charity concert that will raise money for late-stage cancer patients.

Both Mr Ingram and Ms Prechanvinit hope the old Spanish guitar will make an appearance on stage.