have survived. Despite a loyal following and praise from the music press – including from Australia's pop newspaper Go-Set – the band were almost broke by mid-1970. After they signed to EMI under their progressive rock imprint, Harvest Records, the band went into the studio in August 1970 to make their first official recordings, using producer, Howard Gable (The Masters Apprentices). Rudd described the recording sessions, "[we had] gone into the studio in order to record 'Launching Place Parts I & II', to help promote the Launching Place Festival. When we had finished recording those, Howard asked us did we have any others and I said, 'Yeah, I've got this one called "I'll Be Gone"', which we recorded as an afterthought. But then it became a hit single." Rudd had decided to add a harmonica part to the song. The festival at Launching Place occurred in December 1970. "I'll Be Gone" was released in January 1971, which became a surprise No. 1 Australian hit on the Go-Set National Top 60 singles chart in May that year. It became one of the most enduring Australian rock songs of that era. McFarlane described it as a "shuffling, hypnotic" track, for which "suddenly the band was in big demand." 1971–1973: Albums and Indelible Murtceps Spectrum released their debut studio album, Spectrum Part One, in March 1971, although it did not include the hit single. Rudd had refused to add it as "It didn't fit with the innovative roaming style of the rest of the music." The album reached No. 10 in April. Kennedy had left in August of the previous year just after it was recorded, he had "lost patience" as the group "struggled for gigs (promoters found them 'too progressive')." He was replaced on drums and vocals by Ray Arnott (ex-Chelsea Set, Cam-Pact, Company Caine). Rudd praised Kennedy's musicianship: "Mark really carried us through the first year because people would say 'Wow, look at that drummer, they must be a good group'... He used to play things like drum solos!, but he was very good. By the same token, I was almost relieved to get away from that 'cause the emphasis swung back to the material and the band in general rather than one player." Kennedy later worked with Leo de Castro, Ayers Rock and then Marcia Hines. Spectrum's follow up singles, "Trust Me" (June 1971) and "But That's Alright" (November), did