Metallica plays heavy metal music.
Metallica . The release of St. Anger ( 2003 ) alienated fans with the exclusion of guitar solos and the `` steel-sounding '' snare drum , and a film titled Some Kind of Monster documented the recording of St. Anger and the tensions within the band during that time . Some Kind of Monster is a 2004 American documentary film featuring the American heavy metal band Metallica .