Notating an unusual scale
Not so much a musescore question as a notation question - if that is inappropriate for here please forgive. I am working on a quasi Islamic piece that uses the scale:
A, Bb, C#, D, E, F, G, A
It is for singing and guitar and the chords it uses are A maj, Bb maj, Gmin all of which fit perfectly in the scale above as I, II, VII.
I am now trying to notate a piano part and am wondering how I should deal with a key signature. Obviously I can do it with no key signature at all but are there other common ways of working with unusual scales like this? I bears a close resemblance to a Dmin scale but that seems to me to be somewhat misleading since the tonic as actually A.
Thanks for any replies. I just love Musescore, what an amazing program.
If you are interested you can (just about) hear it here: https://www.youtube.com/watch?v=nyD0-6ye4Lk