Rodger Hughes and Mallorca Lee formed Ultra-Sonic in the early 90s to become one of Scotland's most successful dance acts. After signing a recording deal in 1991 with Scottish independent dance label Clubscene Records they released their first single, 'Obsession' and quickly became one of the rave scene's biggest acts.

From 1991-1998 Ultra-Sonic released 14 singles, 4 studio albums, 1 live album and 2 full length tour videos.

Their albums sold over 50,000 copies in the UK alone (with pre-sale orders at 30,000) and around 400,000 in combined singles and albums in just under three years. The band's video sold 6,500 copies in four days, outselling Disney's 'The Jungle Book'.

Rodger and Mallorca disbanded in the late 90s after their final release 'The Hour Of Chaos'. Mallorca Lee continued producing under other various artist names including joining Public Domain for their most successful years. In the mid 2000's original member Rodger Hughes teamed up with new member Peter Coughlan to revive Ultra-Sonic in early 2000's releasing the album "Annihilating Rhythms" then broke up a few years later.

On the 28th June 2013 Mallorca Lee performed his first Ultra-Sonic Anthems set at Northern Ireland's super club Lush to a sold out crowd of old skool ravers. He then started his own 1994 events in Glasgow, performing to a sold out crowd in the infamous Glasgow Arches and continues to perform globally as Ultra-Sonic to this day.

They were managed by Bill Grainger Management.