"Dream On" was also written by Tyler and became Aerosmith's first major hit and classic rock radio staple. The single peaked at number 59 nationally but hit big in the band's native Boston, where it was the number 1 single of the year on the less commercial top 40 station, WVBZ-FM, number 5 for the year on highly rated Top 40 WRKO-AM, and number 16 on heritage Top 40 WMEX-AM. The album version of "Dream On" (4:28, as opposed to the 3:25 1973 45rpm edit) was re-issued late in 1975, debuting at number 81 on January 10, 1976, breaking into the Top 40 on February 14 and peaking at number 6 on the "Billboard" Hot 100 national chart on April 10. Columbia chose to service Top 40 radio stations with a re-issue of the 3:25 edited version, thus, many 1976 Pop Radio listeners were exposed to the group's first Top 10 effort through the 45 edit. The song is famous for its building climax to showcase Tyler's trademark screams, and is notable for being the only track on the album that displays Tyler's real singing voice. It was written on piano but the recording contains a two-guitar arrangement, with guitarist Brad Whitford explaining to "Guitar World"s Alan Di Perna in 1997, "The idea was just to transcribe what Steven was doing with his left and right hands on the piano." The song is composed in the key of F minor.