From the early 1980s, Alsing has worked extensively both on recordings and live events. An early challenge was to sit as a drummer in Dan Hylander's and Py Bäckman's band Raj Montana Band. Later he became a drummer in the international venture Roxette and played on all their records and live during their prime. When Killinggänget aired his first program In the Manegen with Glenn Killing, Alsing sat in the team with, among others, Max Schultz; he also played on the live show In the Manegen with Glenn Killing at Berns. In the Killing Gang TV series NileCity 105.6, Robert Gustafsson played a character named Pelle Alsing.
Pelle Alsing is a member of the band Down Harrison with Tommy Cassemar, Micke Wedberg & Jesper Willaume. Ola Gustafsson is Down Harrison's constant guest musician.