A Latin American musical form called "nueva trova" enjoyed a heyday during the protest movements of the 1960s and '70s. The music traveled north in immigrants' cultural knapsacks. The Bay Area's maintained a strong trova scene for 20 years, fostered by Chilean immigrants. In the Southland, trova hasn't taken root until recently. KPCC's Adolfo Guzman-Lopez reports on a young generation of musicians drawn to the music's message of love and social justice.