The duo or trio
is a frequently booked line-up for small to medium-sized events. The advantage of a duo can certainly be mentioned as the small amount of space required and the usually lower costs for the organizer. As a duo line-up for entertainment, party and dance music, one often encounters a combination of keyboardist and guitarist or even singer. Mostly Midi-files are used, which combined with live vocals, lead to surprisingly good sound results.
Depending on the musical style, diverse instrumental combinations are common. In folk music, the combination of accordion with guitar or baritone is very popular. In jazzy performances, a pianist with vocalist or contrabassist or saxophonist can be excellent to create the perfect ambiance.
The extension of a duo to a trio follows according to the above system. Also in a trio, the musical performance is often based on midi files with the addition of three additional live instruments and voices.