How often should one "shift gears" while soloing using arpeggios?
Keeping it smooth is tough when you go too fast or to slow. Every time
there is a chord change, or continue soloing on the ii over the V?
Remember that there are no "shoulds" in improvising. Playing what you
hear is the goal, so exploring your sound options is the best way to
accomplish this.
The better you know your Chord Tones, the more you can follow the flow
of the progression, so spend lots of time exploring different ways of
expressing the chords melodically.
SCALE / MODES PLAYING
How does one play solos modally?
Certain tunes lend themselves more to a modal approach, such as Equinox
or Passion Dance, but applying modes to jazz standards is more complex.
In my teaching I work with a harmonic approach first so there is a strong
ability to follow the changes. Then applying modal techniques such as
Pentatonics, Hexatonics, Tetratonics and Intervallics can be hinged
off of the harmony. This is the best way to get flow with modes.