British singer James Blunt has issued a summons from London's High Court in an attempt to earn royalties from his successful debut album Back To Bedlam. The Beautiful hitmaker's earnings from his 2004 release were suspended after producer Lukas Burton claimed he had not been given any credit for his work on six tracks on the album. Burton alleged the songs he was given by Blunt were "crude, occasionally laughably direct and betrayed his relative lack of musicianship" - before personally amending the lyrics ahead of the album's release. But Blunt hopes to overturn the ruling and has issued the writ in the High Court to get his royalties reinstated.