Complex sentence: The tape copy sent to Warner Bros. records in America contained a tape drop-out (in the left stereo channel) about a minute into the song, which has been heard on every other US compilation and reissue since 1971.
Split into simpler sentences: The tape copy sent to Warner Bros. Records in America contained a tape drop-out (in the left stereo channel) about a minute into the song. It has been heard on every other US compilation and reissue since 1971.