In 1998 Andy teamed up with friend Westy to form 'The Olmec Heads'. Initially a live outfit they secured a deal with German label Colourbox and had a string of releases, all of which gained big DJ support.
1999 saw The Olmec Heads turn towards the emerging trance scene with 'Spiritualised'. The track was released by Neo Records and became the Olmec's biggest hit. Radio 1's Pete Tong gave the track its first airing in February 1999 and pretty soon after every top DJ was caning it.
Since then Andy has made a name for himself with the Pulser guise. "My Religion" was the official Godskitchen Global Gathering anthem. Originally signed to Armin van Buuren's new label A State of Trance (ASOT) it has since been released on Godskitchen's new label.