Easy Bossa is a simple bossa nova tune that uses chord progressions found in many standards and latin tunes. In the video a solo is played, starting with the melody, and then an improvisation. Typical scales used (in that order) Bb major, Ab Lydian or Bb mixolydian, G major, Bb mixolydian, A alt or Bb dim, D major, back to Bb major. In the second half....it goes to Eb major, then Ab mixolydian, back to Bb major. That's about it. As always, listen first, then use the notation/tab to check the details.