Radica taught at the
Sarajevo Music Academy from 1959 to 1963, and then joined the faculty of the
Zagreb Academy of music, lecturing in musical theory. As a composer, Radica's early style was essentially
neo-classical; in the
Grove Dictionary of Music and Musicians,
Nikša Gligo instances the compositions in
Četiri dramatska epigrama (Four Dramatic Epigrams, 1959), and the
Concerto abbreviato (1960). Gligo comments that some of Radica's later works, with a focus on the relation between speech patterns and "motivic musical ideas", have a style reminiscent of
Janáček and early
Stravinsky. ==References==