A second tour of the US during July and August 1968 (see A Saucerful of Secrets US Tour) was launched to tie into the release of their second album, "A Saucerful of Secrets". Increasingly throughout 1968 and 1969, shows consisted of post-Barrett compositions, with notable exceptions being "Astronomy Domine" and "Interstellar Overdrive", both of which were performed into the 1970s. Their audiences changed during this time as well: while Barrett-era crowds consisted mainly of hippies who would dance in time with the music, they now drew more "intellectual" crowd, who would sit and remain quiet until the last note of a song was played. By early 1969, most of their excess earnings were funneled into upgrading their sound equipment rather than maintaining a permanent light show. If visuals were to be used at all, they had to be provided by the venue or the local promoter.