LSD is the unfinished sixth and final studio album by the English rock band Cardiacs. Recording began following lineup changes, with the lead single "Ditzy Scene" released by Org Records in 2007 to tease the upcoming double album. It was due to be released in October 2008, promoted by singles in August and November, a fall tour, a radio session with Marc Riley and a reissue of the concert film All That Glitters Is a Mares Nest (1992). Production was indefinitely postponed after frontman Tim Smith had a cardiac arrest and stroke on 25 June 2008 leaving him unable to play or provide vocals.
Fundraiser gigs, namely charity concerts entitled "The Alphabet Business Convention", were arranged and tribute albums were recorded to aid Smith in rehabilitation, and to help him to complete work on the album and other musical projects. He died on 21 July 2020 of what was deemed to be another heart attack. The band released "Vermin Mangle", the final track of LSD, on 1 September 2020 to mark his funeral. Originating from Smith's solo performances in 2000 and 2006, it was the first release of new Cardiacs material since "Ditzy Scene", and featured Smith on vocals. Because of its history, the album became the subject of speculation and many apocryphal stories.[1]
In 2024, Tim Smith's brother Jim revealed that work on LSD had continued during Tim's illness and after his death, reaching the mixing phase of recording.[2][3]