No, we’re not pining for Frank Capra’s 1937 fantasy about a journey to Shangri-La. (We’ve got that!) What we’re after is the 1973 remake-with-music, a misbegotten mishmash of mystical musings and ’70s stylings that misused writer Larry Kramer, songsters Burt Bacharach and Hal David, and a high-profile but vocally impaired cast (including Sally Kellerman and Michael York). Lambasted by critics — and skewered by MAD magazine as Least Horizon — the ungainly kitschfest dealt a blow to the Bacharach-David hitmaking partnership and the Hollywood movie musical in general. So how exactly did this trip to paradise go awry? Three decades later, it’s high time to document the debacle: We demand a DVD featuring outtakes, the TV special Burt Bacharach in Shangri-La, and commentary from Kramer and any other Lost survivors who can withstand the flashbacks.