Thank you so much :D. I found it hard designing a theme using only black notes, so I just stuck to one and kept it short. Glad all you people like it! I am sure I would have ruined it anyway if I made it longer ;)
A challenge you say? I accept!
2 themes should be doable; AABA form (just googled it) should be doable; 2 mins.... not so much, but we'll see! Though we don't know yet what the challenge is, so I might regret this xD