REMIX: New Sounds from Arab Lands, which mixes the spontaneity and control rooted in a 1,000-year-old tradition of improvisation, will perform as part of the MusicUnitesUS World Music Series Feb. 28. The concert will be held at 8 p.m. in the Slosberg Recital Hall at Brandeis University and will be preceded by a talk, given by residency curator, Theodore Levin, at 7 p.m. The concert is the final event in REMIX's three-day residency. Tickets for the World Music Concert are $20 for the general public, $15 for the Brandeis community and $5 for students. Tickets can be purchased online and in person at the Shapiro Campus Center. For tickets, visit www.brandeis.edu/tickets.