Quattro Bravo Eballieros
Artist with "1995-2005" album

QUATTRO CD 3 ULTRA LIGHTS
Artist with "Labaakaas latvieshu miilas dziesmas" album

Quattro Mani (Susan Grace and Alice Rybak)
Artist with "A Game of Go" album

Quattro Plus
Artist with "Armenian sacred and folk songs" album

Quattro Pro
Artist with "Ich Hab's Gern Vokal" album

Quattro Stagioni
Artist with the following albums: "Nowell Sing We", "Voices", "Cantio", etc...

Quattro Top Hits
Artist with the following albums: "Quattro izlase 3", "Quattro izlase 2"

Quattrobones
Artist with "Colours of Trombone" album

Quattrocelli
Artist with the following albums: "Favourites", "Kaleidoskop"

Artist with "" album

Quattromboni
Artist with "Express" album

Quattrosax
Artist with "Quattrosax" album

Quattrottave
Artist with "Quattrottave" album