enough to warrant a producer's credit. Accordingly, on the album sleeve, he is credited as "passing by". Gerard Fallec, credited on the sleeve with "production coordination", did not play a part in the production process, but became involved during the year-long battle to have the record released. Ferris credited him with suggesting the album's final title and working on its sleeve. Additional contributors to the album included Harris Halkitis, who had filled in for Vangelis when the band toured in support of It's Five O'Clock, horn player Michel Ripoche, Greek painter Yannis Tsarouchis, actress Irene Papas, John Forst and Daniel Koplowitz. Upon the album's completion, Mercury Records refused to release it, objecting to its uncommercial material and in particular the song "∞". In 1971, the band organised a "one-year anniversary party" at Europa Sonor, to protest the album not being released. According to Ferris, Salvador Dalí was in attendance at the party, and listened to the album. Dalí was highly impressed with the work, stating that it reminded him of the Sagrada Família, and planned an ambitious happening in Barcelona to mark the album's release. The plan was canceled when Dalí angrily broke off further contact after a friend of Ferris' referred to Gala Dalí as "Madame Éluard" during a visit in Rome. Despite Vangelis editing "∞" from its original 39 minutes to merely five, the band continued to struggle with Mercury's obstruction. During this period, the band drifted apart. Vangelis released his first solo album Fais que ton rêve soit plus long que la nuit. Sideras began work on his own solo album, One Day, which featured arrangements by Koulouris. Roussos released his debut solo album Fire and Ice (also known as On the Greek Side of My Mind), obtaining a hit single in Europe with the song "We Shall Dance". Eventually, Mercury agreed to release 666 on its progressive rock subsidiary Vertigo Records in June 1972. The album was promoted with one single, "Babylon"/"Break", released in November. Mercury also produced a four-song EP to encourage radio play, and ran a contest where they would give $666 to the first three promoters who could get their market's share of 40,000 sales. Although Melody Maker stated that "Break" "could easily have made the chart if it had been released as a single", neither the album nor single were commercially successful on release, the album failing to chart and the single