Complex sentence: In June 1988 Megadeth appeared in Spheeris'documentary,', chronicling the late-1980s Los Angeles heavy-metal scene with a focus on glam metal.
Split into simpler sentences: In June 1988 Megadeth appeared in Spheeris'documentary,'. The documentary chronicled the Los Angeles heavy metal scene of the late 1980s with a focus on glam metal.