Chicago 18 is the fifteenth studio album by the American band Chicago, released on September 29, 1986. This album is the first without cofounding member Peter Cetera, and the first to feature Jason Scheff on bass guitar and vocals. With Cetera having been fired by the band in 1985 because he wanted to record a solo album, Chicago eventually hired Scheff to fill Cetera's position as vocalist and bassist. With Scheff and Bill Champlin, who had joined the band in 1981, the most prominent voices in Chicago now belonged to its two newest recruits. Chicago again hired producer David Foster to create a followup to Chicago 17. The band recorded an updated, high-tech remake of their classic "25 or 6 to 4" (#48). Scheff recalled when he asked Foster on the way he should sing the song, the latter responded: "Just like Cetera." The following singles, "Will You Still Love Me?" (#3) and "If She Would Have Been Faithful..." (#17) became hits. Scheff was lead vocalist on all three releases. The album also features a brief instrumental horn riff, Pankow's "Free Flight." Despite the success of its predecessor, Chicago 18 ultimately only went gold, peaking at #35 on the Billboard Top 200 charts. Reception Chicago 18 (Full Moon/Warner Bros. 25509) reached gold status and #35 in the US during a chart stay of 45 weeks. It did not chart in the UK. Track listing A re-recorded version of "When Will the World Be Like Lovers?" (Robert Lamm/Tom Keane/David Foster) appears on Robert Lamm's 1995 solo album Life Is Good In My Neighborhood. The original recorded version from the Chicago 18 sessions also appears online. Personnel Chicago Bill Champlin – keyboards, vocals Robert Lamm – keyboards, vocals Lee Loughnane – trumpet James Pankow – trombone, brass arrangements Walter Parazaider – woodwinds Jason Scheff – bass, vocals Danny Seraphine – drums, drum programming Vocal arrangements by Chicago, Bill Champlin, and David Foster Additional musicians David Foster – keyboards, additional arrangements, brass contributions Tom Keane – keyboards, backing vocals Michael Boddicker – synthesizer programming David Boruff – synthesizer programming Rhett Lawrence – synthesizer programming Bo Tomlyn – synthesizer programming Michael Landau – guitars Howard "Buzz" Feiten – guitars Steve Lukather – guitars Jeremy Lubbock – string arrangements on "If She Would Have Been Faithful...", "Will You Still Love Me?", and "I Believe" Jules Chakin – string contractor Gerald Vinci – concertmaster Betty Joyce