Raised in Hamburg, Germany, Tatjana Merzyn began studying violin at a young age and later viola and piano. She earned a Bachelor's and Master's degree in Music Education and History from Berlin’s University of Arts and from Humboldt University, also in Berlin. Tatjana served as principal violist in several German youth orchestras. Additionally, she performed as piano soloist and as conductor with the Orquesta Sinfónica de Trujillo in Peru.

Tatjana's passion for music education began when she first visited Peru in 2006 to work as a volunteer in the El Sistema-inspired project Arpegio Perú which offers instrumental lessons free of charge. Besides teaching strings and chamber music, she served as a conductor of the Orquesta de Barro that unites kids from different social backgrounds. Tatjana is now a mentor to twelve volunteers each year who support the work of the local musicians and teach over 300 kids. She also directs an intercultural orchestra exchange program with the Droste-Hülshoff-Sinfonieorchester. As part of this program, the Orquesta de Barro traveled to Berlin in 2010 and presented a joint concert with its German partner orchestra. She has helped Arpegio Perú to expand its activities by collecting donations, inviting professional musicians to give master classes, and by improving its organizational structure.