This site is astounding in terms of what it can do.
I tune my marimba's to D F G A C D
Typed those letters into Wolfram and it came back with "D Blues Pentatonic Scale"
"A blues scale" ---> "A C D Eb E G"
"A major chord" --> "A C# E"
"A minor chord" --> "A C E"
Ok ... so you knew all of that anyway.
Maybe I'm impressed by how it does it ...
Look at this:
http://www02.wolframalpha.com/examples/Music.html