Ok. A harmony over C C# D could be harmonized with G. Again it goes back to the scales, C C# D is a common blues progression in G minor. The first clue about blues is the 3 consecutive semi-tones ascending or desecnding. Look up the blues minor scale and you'll see: 1, 3, 4, b5, 5, 7. C C# D is 4 b5 5 in G blues minor. Could even be harmonized with A major, making a bluesy major sound, b3, 3, 4 is a common blues major progression. It could also be harmonized with D, C C# D is a common progression over a D chord in Bebop Jazz. As for C, could be but would be very dissonant. Root, augmented 1st, and 2nd is not a pleasant sequence. It's not always the first note in the solo thats the harmony, alot of the times the first note of the solo is a note other than the root of the chord in harmony. Roughly any note will work, each producing a different effect. Using G would give you a bluesy sound, A would give you a more countrish sound since blues major is favorite scale with country players. While using D will give you a more jazzy sound.

As for rhythm, that's your call but it should be simplier than the lead your putting over it.

[Edited by noticingthemistake on 01-29-2004 at 11:20 PM]