The Undertones [Mark 1] Line Up : Feargal Sharkey [Vocals], Sean O'Neill [Guitar], Damian O'Neill [Guitar], Michael Bradley [Bass Guitar], Billy Doherty [Drums]

The Undertones were formed in Derry in 1975. After the release of their fourth album, 'The Sin Of Pride', in 1983, the band decided to split.
Bam Bam & The Calling Line Up : Paul McCartney [Vocals & Guitar], John McCloskey [Guitar], Joe Brown [Bass Guitar], Thomas Doherty [Drums], John McCloskey [Guitar], Reamonn O'Gorman [Guitar]
Eleven Line Up : Damian O'Neill [Guitar], Michael Bradley [Bass Guitar]
That Petrol Emotion [Mark 1] Line Up : Steve Mack [Vocals]; Sean O'Neill []; Damian O'Neill [Bass Guitar]; Reamonn O'Gorman [Guitar]; Ciaran McLaughlin [Drums]
Rare Line Up : Mary Gallagher [Vocals], Sean O'Neill [Guitar], Locky Morris [Bass Guitar], David Whiteside [Drums]

Through connections on the local arts scene, Sean met Rare`s vocalist Mary Gallagher and guitarist / keyboard player Locky Morris. Rare combine dance and rock elements with Sean`s enthusiasm for hip-hop and dub. Rare went on a mini-UK tour, before returning to Derry to record their debut album, 'Peoplefreak', which was released during the summer of 1997. After touring the album for a while they called it a day.
That Petrol Emotion [Mark 2] Line Up : Steve Mack [Vocals]; John Marchini [Bass Guitar]; Damian O'Neill [Guitar]; Reamonn O'Gorman [Guitar]; Ciaran McLaughlin [Drums]
That Petrol Emotion [Mark 3] Line Up : Steve Mack [Vocals]; Brendan Kelly [Bass Guitar]; Damian O'Neill [Guitar]; Reamonn O'Gorman [Guitar]; Ciaran McLaughlin [Drums]
The Wavewalkers Line Up : Damian O'Neill [Guitar]; Reamonn O'Gorman [Guitar], Brendan Kelly [Guitar], Kevin Sharkey [Drums]
Marfa Lights Line Up : Steve Mack [Vocals]
Damian O'Neill Line Up : Damian O'Neill [Vocals & Guitar]
The Undertones [Mark 2] Line Up : Paul McLoone [Vocals], Sean O'Neill [Guitar], Damian O'Neill [Guitar], Michael Bradley [Bass Guitar], Billy Doherty [Drums]