Frank Zappa's recorded outpoint is, to say the least, schizophrenic.  Case in point: The Mothers Live at Fillmore East.  Featuring Flo 'n' Eddie from the Turtles, this version of the Mothers of Invention split its shows between extended, musically challenging instrumentals and lyric heavy, comically centered "pop" songs.  Zappa's sociological obsession with being a rock star and all that such a job entailed reached its peak on this tour with his extended "Groupie Routine" and his inclusion of several numbers from the soundtrack to "200 Motels" (none of which are featured here, but were part of the sequence herein included).