A classically trained musician and multi-instrumentalist, during the 1990s Franglen played keyboards, electronic instruments and drum programming on studio recordings with Björk, Primal Scream, Hole, Pulp and Blur, amongst others.
Since 2008, Franglen has been the musical director of Nico - A Life Along the Borderline,[9] the John Cale curated tribute shows to the singer Nico, featuring performances by a variety of artists including Mark Lanegan, Mark Linkous, Mercury Rev, Lisa Gerrard, Peter Murphy, Guillemots, Laetitia Sadier and Joan As Policewoman in shows in London, Ferrara, Wroclaw and Rome.
[10] In 2011, Franglen acted as musical director for psychedelic folk musician Mark Fry, performing at a concert in London featuring members of Mercury Rev, Super Furry Animals, and Tunng.
[13] In November 2011, he created Hive, a sound art installation featuring 50 radios tuned to different stations, running for 24 hours inside the World War II gunnery training dome at Langham, Norfolk, UK.
[14] Between January and July 2012, he created Legacy, an extensive solo installation inside an abandoned mill building in the London Docklands.