Based on

Movies like The Pioneer bugles are sounding (1972)

A film-concert. Featuring songs by Dunaevsky, Solovyov-Sedoy and other Soviet classics, performed by the Song and Dance Ensemble of the Leningrad Palace of Pioneers (artistic director Vladimir Badulin). Against a backdrop of a continuous succession of Pioneer songs and dances, the film also features documentary footage from the life of the Leningrad Palace of Pioneers in the early 1970s.