9pm (Till I Come) was a 1999 single released by ATB which entered the UK Singles Chart at #1 in June of that year and stayed there for a fortnight. It was in the Irish Singles Chart for 2 consecutive weeks. It was the 5th biggest-selling single of 1999 in the UK, with around 850,000 copies sold.
The song was the first to be released by André Tanneberger's project of ATB. It was the first track to feature the sound of a pitched guitar, which was so striking for the first singles to be released as ATB. Apparently Tanneberger was fooling around with his studio-equipment, while he was showing someone around. He liked the sound so much that it became his trademark, and a world-wide dance hit.