Hello: I have searched this bulletin board and other sources for direction on the practical use of modal scales in the performance of music. Over and over I have read how modes are constructed. However, I still do not understand how to make practical use of the unique coloration afforded by each mode. In other words, when does one begin playing a modal passage versus simply "wandering" through notes of the key signature? Jimmy Haslip provides in his book "The Melodic Bass Library" several examples of bass lines constructed using modes of the C-Major scale. However, these lines do not necessarily begin with the root of the mode (i.e. the D-Dorian bass line ends in "D" but does not begin with "D"). I play bass in a group at the church I attend. I understand it's best to play the root of a chord at each chord change. Following that, I realize I may choose to use other notes of the chord. But I become confused at this point. As an example, let's say we're playing a song in the key of C-Major and the organ is sustaining a Dmin7 chord. I realize one of the modes I can play over this chord is D-Dorian. Must I begin a phrase with "D" and then play up or down from there (using only notes within C-Major) to establish the color of D-Dorian? Put another way, would the phrase D F A C B C B C be an example of the use of D-Dorian or have too many intervals been left out to consider this a D-Dorian phrase? Thanks.