Overview
Power trios have at times been characterized as loud and bombastic, often embarking on long improvised jams that would highlight the virtuosity of the individual musicians. The American blues band, Hot Tuna, for example, when it chose to play electric, would often play six hour sets when performing in the mid 1970s. Power trio music often reflects a blues or jazz influence, since these two types of music invite improvisation. Typically, instrumental performance and overall impact are emphasized over vocals and lyrics. For instance, Beck, Bogert, and Appice would generally be considered a power trio, whereas the Jeff Beck Group, (a similar lineup with Rod Stewart on vocals) would not.
As power trios have one guitar, one bass and one drummer, this arrangement usually requires the guitarist to play both rhythm and lead parts. The emphasis on guitar solos and crashing rhythm sections in the power trio contributed to the development of heavy metal, although some power trios would prefer hard rock labels.
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