December that year, pianist Nicky Hopkins spoke of having just attended the New York sessions for John Lennon's "Happy Xmas (War Is Over)" single, where Harrison had played them "about two or three hours" worth of new songs, adding: "They were really incredible." Hopkins suggested that work on Harrison's next solo album was to begin in January or February at his new home studio at Friar Park, but any such plan was undone by Harrison's commitment to the Bangladesh relief project. While he found time during the last few months of 1971 to produce singles for Ringo Starr and Apple Records protégés Lon & Derrek Van Eaton, and to help promote the Ravi Shankar documentary Raga, Harrison's next project in the role of music producer was not until August 1972, when Cilla Black recorded his composition "When Every Song Is Sung". Throughout this period, Harrison's devotion to Hindu spirituality – particularly to Krishna consciousness via his friendship with A.C. Bhaktivedanta Swami Prabhupada – reached new heights. As Harrison admitted, his adherence to his spiritual path was not necessarily consistent. His wife, Pattie Boyd, and their friend Chris O'Dell would joke that it was hard to tell whether he was dipping into his ever-present Japa Yoga prayer bag or "the coke bag". This duality has been noted by Harrison biographers Simon Leng and Alan Clayson: on one hand, Harrison earned himself the nickname "His Lectureship" during his prolonged periods of fervid devotion; on the other, he participated in bawdy London sessions for the likes of Bobby Keys' eponymous solo album and what Leng terms Harry Nilsson's "thoroughly nasty" "You're Breakin' My Heart", both recorded in the first half of 1972. Similarly, Harrison's passion for high-performance cars saw him lose his driving licence for the second time in a year after crashing his Mercedes into a roundabout at 90 miles an hour, on 28 February, with Boyd in the passenger seat. In August 1972, with the Concert for Bangladesh documentary film having finally been released worldwide, Harrison set off alone for a driving holiday in Europe, during which he chanted the Hare Krishna mantra nonstop for a whole day, he later claimed. Religious academic Joshua Greene, a Hare Krishna devotee, has described this trip as Harrison's "preparation" for recording the Living in the Material World album. Songs Rather than revisit compositions left over from the All Things Must Pass sessions, Harrison's material