Enjoy a big dose of Brazilian culture at todays Samba Nights in the Heights. Live music, dancing, performances and more are all on the schedule. Dont worry if your samba skills are minimal; theres a free introductory class to help get the fun started. 7 to 11 p.m. Brazilian Arts Foundation, 1133 East 11th Street. For information, call 713-862-3300 or visit www.brazilianarts.org. $10.