The Material Girl hitmaker joined stars including Jay Z, Beyonce, Rihanna and Kanye West in March (15) to announce their partnership in the company, and last month (Jun15), the 56 year old used the site to exclusively launch the promo for her new single B**ch I'm Madonna.

However, the video release was marred by technical problems and representatives for the company subsequently issued an apology for the glitch, which prevented some users from viewing the promo premiere at the time of its big reveal.

Madonna has now addressed the controversy, admitting there are still some problems, but insists they are focused on the future of the site.

She tells The Associated Press, "It's just the beginning, so we're working out a lot of kinks and hopefully we're going to build something unique and amazing that's going to attract a lot of people."

The pop superstar is also defending the streaming site's subscription prices of $10 (£6.67) and $20 (£13), insisting the fees help both new and established musicians to get paid for their work.

She continues, "It's important that people understand we didn't create Tidal, we didn't put this together, we didn't all join forces because we're broke and we want more money. The idea is we want to support other artists and we want people to understand this is our heart, this is our work, and we want people to recognise that and we want other artists to have a chance.

"We live in a society now where everybody just expects everything to be for free, but you don't get a house for free; you have to pay somebody to build it."