..."Hard to Say I'm Sorry," which went to #1 in the charts. The second single, "Love Me Tomorrow," was also co-written (again with Foster) and sung by Cetera, reaching No. 22 on the singles chart. The third single, "What You're Missing," was yet again sung by Cetera. When Chicago 17 was released in 1984, it became the veteran band's most successful selling album in their history, eventually going on to sell over 7 million copies in the United States alone. All four singles released from the album were sung by Cetera, including three which he co-wrote, and all of them charted in the top 20: "Stay the Night" (#16), "Hard Habit to Break" (#3), "You're the Inspiration" (#3) and "Along Comes a Woman" (#14). With the advent of the music video and the growing popularity of MTV, Cetera became the 'face' and public leader of the longtime faceless band that was Chicago.