I'm sorry if this is a stupid beginners question, but it's really getting me down. I recently bought an English Concertina and have been learning to play some traditional folk tunes on it. I go to Google Images and type 'Music Twinkle Twinkle Little Star.' The first piece of music shown is in D Major, the second is in G major, the third is in C major. I then click on one of the websites and find the tune in B♭ major, A♭ major, F major etc...
My question is - What key should I be playing it in and why?
I'm also wondering if it's traditional to play tunes in the original keys that they were written down in?
Please note that I'll be playing them by myself and won't be singing.
I shall be very grateful for any advice.
With many thanks,