Prince's estate have filed a lawsuit against the producer planning to release a six-track EP featuring "new, undiscovered studio recordings" by the late musician to mark the first anniversary of the death of Prince.

The songs are said to have been produced between 2006 and 2008 and represent a small taster of the legendary vaults of unreleased material that the late singer is said to have kept under wraps in his Paisley Park HQ.

The EP is called Deliverance and includes "a four-movement medley" called Man Opera, which is made up of song entitled I Am, Touch Me, Sunrise Sunset and No One Else and ends with an extended version of I Am.

Prince co-wrote and co-produced the EP’s songs with studio engineer Ian Boxill, who has previously worked with L.A and Babyface, Shalamar, Jimmy Jam & Terry Lewis and S.O.S. Band.

How Prince brought his purple reign to Ireland

Boxill completed the tracks following Prince’s death last year and he said in a press release: "I believe Deliverance is a timely release with everything going on in the world today, and in light of the one-year anniversary of his passing. I hope when people hear Prince singing these songs it will bring comfort to many."

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The EP is being released independently and Boxill said: "Prince once told me that he would go to bed every night thinking of ways to bypass major labels and get his music directly to the public. When considering how to release this important work, we decided to go independent because that’s what Prince would have wanted."

However, Prince‘s estate have now filed a lawsuit over the release of the new EP. Local reports in Prince’s hometown of Minneapolis on Wednesday state that both Paisley Park and Prince’s estate have filed a joint lawsuit against Boxill, accusing him of "trying to exploit one or more songs for his personal gain at the expense of the Prince estate".

Warner Bros will also release two new albums of posthumous songs from the Paisley Park vaults on June 9.

Meanwhile, for the second year running, Dublin venue The Grand Social will give praise to the Purple One this Friday with A Celebration of Prince featuring a two-hour live set by 11-piece band HOUSEQUAKE, DJs, a big screen showing of Purple Rain, and a panel discussion.