A drum solo is an instrumental solo played on a drum kit. A drum solo may be set or improvised, and of any length, up to being the main performance. In rock, drum solos are unique in that traditionally they are minimally or never accompanied, whereas other instruments may play solos accompanied or unaccompanied. They are also typically free-form in that they do not necessarily adhere to the tempo, style or structure of the song they accompany.
In jazz, drum solos more typically adhere strictly to the tempo and form of the song, and may be accompanied sporadically by the other instruments; they may also "trade fours", or take alternating four-bar solos with the rest of the band. They may also trade eights, twelves (in the case of a blues), twos, single bars, or full choruses. #akhamiemusic