 Although the riff fits into the song's 4/4 time signature, it is sufficiently complex that, in order to follow the music, most listeners will need to memorize the riff and perceive the timing by the pattern, ignoring the time signature.It is likely that the musicians had to do the same.The riff is performed by all members of the group, playing the melody in unison, except for the violin played by Ric Sanders holding one high note.