The Gateway Harmonica Club will lead a three-part harmonica workshop at Crown Center, taking place at 10 a.m. on Wednesdays, Oct. 2, 9 and 16. The class is for anyone interested in trying out the harmonica—no prior music reading skills needed.  Bring your own 10-hole diatonic harmonica in the key of C or purchase one for $10 during the initial session. For more information and to register, visit: stloasis.org or call 314-862-4859, ext. 24.