
Bebop was new and unique because of its solo improv format. Bebop was considered by many an art in itself because instead of the songs being centered around a melody line, bebop tunes were centered around a soloist who improved around complex chords played by the rhythm section. Just like the way Pollack emphasised the creation of art as a critical element to each piece, Miles Davis wrote songs based around the solo line. The creation of each solo around a theme was the basis of the song. This radical approach is parallel to what was going on in the art world at the time. Artists were using innovative techniques in thier creations. Both art and jazz at the time were moved by artists using innovative techniques.

http://www.youtube.com/watch?v=nrisYOEpADY&feature=related
http://www.youtube.com/watch?v=P4TbrgIdm0E&feature=related