Released in 1981 as part of their album "Chicago 13," "Once in a Lifetime" represents a significant moment in Chicago's evolution from a jazz-rock ensemble to a more mainstream pop-rock band. The track, which was penned by band members Peter Cetera and David Foster, showcases the group's signature brass instrumentation blended with contemporary pop sensibilities. The song's upbeat tempo and catchy melody were emblematic of the early '80s, a time when bands like Chicago were exploring new sounds while attempting to maintain their original identity. "Once in a Lifetime" was not only a commercial success, peaking at number 5 on the Billboard Hot 100, but it also solidified Chicago's presence in the pop music landscape of the time.
Lyrically, "Once in a Lifetime" delves into themes of love, nostalgia, and the fleeting nature of time. The song reflects on the moments that define our lives, evoking a sense of yearning and appreciation for experiences that come but once. Lines such as "And when you’re feeling low, just let it go" suggest a message of resilience and the importance of cherishing significant moments. The chorus, with its repetitive and anthemic quality, serves to reinforce the idea that life is a series of unique occurrences that, while ephemeral, leave a lasting impact on our identities and memories.
Critically, "Once in a Lifetime" has been praised for its catchy hooks and orchestration, yet some reviews have noted it as a representation of Chicago's shift towards a more commercial sound, which polarized some long-time fans of their earlier work. Despite this, the song has enjoyed a lasting cultural legacy, often featured in various media and nostalgia-driven playlists that celebrate the music of the 1980s. Its universal themes resonate with listeners, ensuring that "Once in a Lifetime" remains a staple in Chicago's repertoire and a beloved classic in the annals of rock history.