In the 1960s Panzeri started a successful collaboration with Daniele Pace and his songs contributed to launch the careers of notable singers such as Gigliola Cinquetti, for whom he composed the Eurovision Song Contest 1964 and Sanremo Music Festival 1964 winning song "Non ho l'età", Caterina Caselli, for whom he wrote the hit "Nessuno mi può giudicare", and Orietta Berti, for whom he composed most of her 1960s-1970s repertoire.