Making his first appearance on The "Happy Together Tour" is Chicago lead singer 1985-2016 Jason Scheff, with such chart topping 1970s Hits as “25 or 6 to 4”, “Just You And Me“, “If You Leave Me Now” and “Feeling Stronger Every Day”. In mid-1985, 23-year-old Scheff joined the multiplatinum band Chicago, His lead vocals were debuted on the 1986 single "25 or 6 to 4", a remake of their 1970 hit, then followed up with "Will You Still Love Me?" Jason remained Chicago’s Lead Singer for over 3 decades…incredible!