"9 PM (Till I Come)" is a song by German electronic dance music producer ATB, featuring uncredited vocals by Yolanda Rivera released as his debut single and the lead single from his debut album Movin' Melodies (1999). "9 PM (Till I Come)" was the first song 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 worldwide dance hit.