Which key of whistle?
I’ve been listening a lot to Ravishing Genius of Bones by Brian Finnegan. One song in particular that I like is "Only". When I use a key finder on this it says it’s in c#major. Not being particularly steeped in music theory (at all!) I wondered what key of whistle is best to play in c#major? I can play the tune but would like to try and play along with the recording. While I’m here, is there a good page that tells you what each key of whistle can play what supplementary keys?
Thanks in advance,