How 'Free Four' Became Pink Floyd's First Autobiographical Lyric About Roger Waters' Father

Before “The Wall” or even “The Dark Side of the Moon,” Roger Waters let his personal history slip into a song for the first time on Obscured by Clouds. The track “Free Four” drops a line about “a soldier putting down his gun” and “your father’s son” — a direct nod to Eric Fletcher Waters, who died at Anzio in 1944 when Roger was just five months old.

It’s easy to miss because the song sits inside a film soundtrack (La Vallée) and sounds almost throwaway: a hard-driving acoustic strum, a spoken-sung delivery, and a whistled outro. But that lyric marks the moment Waters stopped writing only from fiction or borrowed imagery and started digging into his own life. “Free Four” is the quiet seed for almost everything that came after — the grief, the war, the absent father — themes he’d spend the next decade unpacking.

Waters later admitted he hadn’t even realized what he’d done until he heard the playback. The song was also the band’s only single from the album in the U.S., but its real significance isn’t in charts — it’s in being the first crack in the door that eventually led to a whole wall.