Audio production software startup Landr raised the cash in a Warner-led round that also featured Nas and Plus Eight Private Equity, a fund launched by a collection of DJs.

Canada-based audio post-production platform Landr has attracted $6.2m for a series A round funded by investors including record company Warner Music Group (WMG).

WMG led the round according to Digital Music News and was joined by Real Ventures, Yul Ventures, HDGL, which acts as the investment vehicle of entertainment company Cirque du Soleil co-founders Guy Laliberté and Daniel Gauthier, DJ-backed fund Plus Eight Private Equity and rapper Nasir Jones.

Landr’s platform is based on a machine learning algorithm that automates audio post-production. The algorithm was developed by Stuart Mansbridge, who initally researched automated audio processing at the Queen Mary University of London.

Mansbridge is now chief music technology officer at Landr, while the university holds an undisclosed stake in the company.

Landr previously secured an undisclosed sum in seed funding from incubator TandemLaunch when the latter licensed the technology from Queen Mary University. The company has not disclosed any other funding details.