Power Trio

A power trio is a rock and roll band format having a lineup of electric guitar, bass guitar and drum kit (drums and cymbals), leaving out the second rhythm guitar or keyboard instrument (e.g., Hammond organ) that are used in other rock music bands that are quartets and quintets.Larger rock bands use one or more additional rhythm section to fill out the sound with chords and harmony parts. Most power trios in hard rock and heavy metal music use the electric guitar player in two roles; during much of the song, they play rhythm guitar, playing the chord progression for the song and performing the song's important riffs, and then switching to a lead guitar role during the guitar solo.While one or more band members typically sing while they play their instruments, power trios in hard rock and heavy metal music generally emphasize instrumental performance and overall sonic impact over vocals and lyrics.An example of a power trio is Motörhead, which consisted of a bassist, guitarist and drummer, with Lemmy, the bass guitarist, singing lead vocals simultaneously while he played bass.