He helped the careers of many young singers of the time, such as, Chucho Avellanet, Lucecita Benítez, Sonia Noemí, Ednita Nazario, Lou Briel (Anexo 3), Zeny & Zory, Carmita Jiménez, The Night Walkers, and others. He was also responsible for bringing into Puerto Rico various visiting artists, including Tony Croatto (with his sister Nelly) and "Luisito Rey", the father of Latin American pop sensation Luis Miguel, who was born in Puerto Rico and for whom Herger was his godfather. He was a popular radio host during the mid- to late 1970s.