Brian Finnegan is a prolific composer from Northern Ireland, playing Irish Flute and Tin Whistle.
I find his music very beautiful and definitely ripe for playing on the Violin, Viola or Cello.
First found Brian through a discussion at thesession.org - about a tune called "The Blue Keys". Turns out the name is actually "Blue Gaze" - composed by Brian.
Here, he plays it as the 3rd tune of the medley "Frieda" (starts at 4:20). Sheet music at thesession.org.
Here, it's played as the 1st tune of an amazing whistle & Highland pipe performance by Alexander Levack, Glasgow 2018.
Brian's music would sound fabulous played on the fiddle!
All 9 of the tracks on his "The Ravishing Genius of Bones" album are definitely worth listening to.
...think I might have already mentioned Brian elsewhere on the forum - good stuff!
Never heard of Finnegan.
I don't do a lot on the flute, just doodle in the upper register at the moment: oboes don't overblow - they have an octave key, so the flute needs overblow practice. It's purely for pleasure and something I've been wanting for 35 years. But there is in fact a flute orchestra in London that I'll keep my eye on.
If it's generic folk music, I have a go on both instruments, assuming it doesn't go too low for the flute. However, a lot of stuff is online (I don't play much by ear), and there are often multiple versions transposed for different instruments.
The flute is very good for pentatonic stuff - I'd like a Japanese flute (a 2.4' Shakuhachi), but the price is silly and they are made in China anyway, so I'll probably just stick to flute and maybe also alto flute.