Giant Steps, playing with major pentatonic constructed on the 5th degree.
/C#m7 F#7-V-  /Bmaj7 /— F# major pentatonic
/Am7  D7-V-  /Gmaj7 /— D major pentatonic
/Fm7  Bb7-V-  /Ebmaj7 /— Bb major pentatonic

Music and tabs
https://app.box.com/s/ioas7oe3qvi4tq5g3usg1vmqrvx5ofn2