O'Mallery's March
Artist with "Live" album

O'Malley
Artist with the following albums: "Back On The Shore", "Straight Ahead"

O'Malley's March
Artist with the following albums: "Celtic Fury", "Wait for Me"

O'Malley's Symphony Orchestra
Artist with "Prodigal Son EP" album

O'Malley, Peter
Artist with "Beyond the pale" album

O'Mara - Attig - Roggenkamp
Artist with "spirits" album

O'Mara, Hornek, Scales, Lettner
Artist with "Acentric" album

O'Mara, Peter
Artist with "A Rhythmik Concept for Jazzguitar-Playalongs" album

O'Mara-Attig-Roggenkamp
Artist with "spirits" album

O'Meara, Garry
Artist with "Pickin' Time (2013)" album