"So Hard To Know" is a song recorded by American jazz trumpeter and vocalist Chet Baker written by Roxanne Seeman and Rique Pantoja. It appears in "Let's Get Lost", the 1988 Oscar-nominated documentary about the life and career of Baker directed by Bruce Weber.

Let's Get Lost is a 1988 American documentary film about the turbulent life and career of jazz trumpeter Chet Baker, who died four months before this film is released. written and directed by Bruce Weber. The title is derived from the song "Let's Get Lost" by Jimmy McHugh and Frank Loesser from the 1943 film Happy Go Lucky, which Baker recorded for Pacific Records.