The most obvious method would be simply to slide up, as in a barbershop standard. It clearly depends on the style/genre of your music, of course. One method might be to go to chord VI (moving the A...
There is an infinate ways to modulate from C major to D major.One way in which you can do this is use a "pivot chord" which is a chord that is similar in both keys. The chords similar between these...
Progression: B flat: I - N6(Flat II) D: VI - V(7) - I Chords: B flat - C flat (B) - A - D Starting with a B flat major Chord, move to a Neapolitan chord (which is just a flat major II, or a chord...