"It's a hard process because I have so many ideas just sitting there. To actually finish them is a completely different scenario.
"And it's not easy music to make, especially this latest album. There was a clear intention when I was writing it to not use any electronic sounds or computer sounds. I wanted to make it all organic and real," he says.
Sheehan relies heavily on his family's collection of toy instruments on Stories From Elsewhere. For instance, the song Little Sines came about when he created a melody on a handmade music box.
"That particular melody sat around the house for about a year, then my wife worked it out on the piano and my son Ridley started singing it incessantly. It kind of drove us crazy," he laughs. "Then I decided to finish the track off."
And the experimentation didn't end there.
"One night I'd had a few too many wines and I put the piano roll into the music box backwards and out popped this amazing melody. That ended up on the record as Creation Myths. It's the Little Sines melody but backwards and upside down."
It's the use of such instruments and techniques, deemed redundant in many mainstream genres today, which sets Sheehan apart and helps to make Stories From Elsewhere a dreamy, reflective masterpiece that sits perfectly alongside his impeccable back catalogue.
"A really good friend of mine told me that nostalgia was a very powerful drug and that was kind of percolating in my head when I was finishing this album off. I wanted to play with the idea of those distant memories and feelings from childhood."
• Rhian Sheehan's Stories From Elsewhere is out now.