 A friend of Harrison's since the Beatles' years in Hamburg, Voormann was dismayed at the prevalence of drugs at the sessions.Recognising that Harrison was "bottoming out from events of the past couple of years", according to Rodriguez, Voormann's participation on "World of Stone" marked a relatively rare appearance by the German bass player at the "Extra Texture" sessions.Foster, who had recently arrived in Los Angeles from Canada, says he was "overjoyed" to be invited to contribute to a Harrison album, but he was shocked at how the musicians would imbibe midway through rehearsing a song.