"Crazy," written by Willie Nelson and made famous by Patsy Cline, became a career-defining hit that rescued both artists at pivotal moments in the early 1960s. Nelson, then struggling to place songs in Nashville, wrote the track as a last resort after failing to sell it to other artists, including Larry Butler. Its slow, vulnerable torch-song style initially made it a hard sell, but it went on to become one of country music's most enduring standards, cementing Nelson's reputation as a songwriter.

Cline, recovering from serious injuries sustained in a car accident, was reluctant to record the song, disliking its emotional rawness and Nelson's unconventional phrasing. She was eventually persuaded by her husband, Charlie Dick, and producer Owen Bradley to record it, reportedly with some reluctance. The song peaked at number two on the charts but became one of her signature hits, while Nelson later recorded his own distinctive version.