MassF

MassF is the alias of Copenhagen DJ Mads Lindharth Frederiksen, who also plays as Redline Warriors and promotes bass nights in the city. His music runs across heavy bass styles from 120 to 174 BPM, and his events mix drum and bass, dubstep, garage, jungle and reggae.

He promoted Bas Under Buen in Frederiksberg in 2022, is part of the Ohoi crew behind it and of Solumn Records, and started the Coalition Sessions concept to build a bass-music community. In April 2024 he presented Sweet Bass Vol 1 with Sweetbox Audio at H15 Scene & Studio, and that December Jule Bass at 5E on the HISI HIFI sound system; in September 2025 he hosted Coalition B2B Mana Club at RUST. Dwonji, Dr Meaker and 2000F have appeared on his line-ups.