In the 1980s when his high school classmates listened to the hard rock band AC/DC, John Concepcion was enamored with Luciano Pavarotti, the internationally acclaimed operatic tenor.
Concepcion, of Flossmoor, proudly proclaims the voice is his instrument and opera is “in my DNA.” He thanks his high school teacher for encouraging him to pursue a vocal career.
“He recognized that I had an interest in choral music and he encouraged me to think…
