The Empire State of Mind star relaunched the music brand last year (15) with new investors including his wife Beyonce, Kanye West, Nicki Minaj, Madonna, Rihanna and Daft Punk.

The stars faced a barrage of criticism from fans, artists and critics alike, amid concerns the company's subscription fees and lack of a free service could drive music lovers back to illegal downloads, but they fought back, insisting Tidal grants musicians a better cut of royalties compared to other similar services.

However, in February (16), executives at Jay Z's company, S. Carter Enterprises, and two other firms linked to Tidal were hit with a class action lawsuit from musician John Emanuele and bosses at Yesh Music LLC for copyright infringement and the underpayment of royalties.

Emanuele, who is a member of the group The American Dollar, claimed his music was available to stream on Tidal, but he never approved the access to their music and the band had not received any compensation.

The plaintiffs were seeking $150,000 (£105,320) in damages per infringement and an injunction barring the company from distributing the music.

Representatives for Tidal hit back at the allegations in the lawsuit, insisting Emanuele was going after the wrong companies and they also removed the music from their catalogue.

Last week (ends08Apr16), the plaintiffs voluntarily dropped S. Carter Enterprises from the case after agreeing there was no basis to include SCE in the case and the lawsuit against the rapper's company was dismissed. The suit against the other two companies is still pending.