Josh Groban's "Believe" serves as the emotional centerpiece of the *Polar Express* soundtrack, establishing his signature blend of classical training and contemporary pop sensibilities. Released in 2005, the track exemplifies the era's trend of vocal pop featuring soaring, operatic delivery, a style Groban popularized with hits like "The Prayer" and "You Raise Me Up." The recording captures the film's themes of hope and childhood wonder, utilizing lush orchestration to create an uplifting atmosphere that resonated widely with audiences. As a defining work of mid-2000s vocal pop, the song remains a staple of his discography, showcasing his ability to blend traditional vocal techniques with modern production values to craft memorable musical moments.