In 1969, Guercio shortened the band's name to Chicago and worked with them on a second album, "Chicago II". Both this album and the original "The Chicago Transit Authority" featured long recordings which were moderately popular on FM stations, but when Guercio edited several tracks down to a radio-friendly 3-minute length—including single versions of "Make Me Smile", "25 or 6 to 4", and "Beginnings"—Chicago became a huge commercial success. Guercio would ultimately produce eleven albums for the band (including five straight number 1 pop albums, starting with "Chicago V") and 17 Top 25 singles.