1) El Sistema's "Community in Harmony" concert
El Sistema Somerville, a program that teaches classical music to young kids in Somerville Public Schools, holds its "Community in Harmony" concert tonight. It's at 6:30 p.m. at the East Somerville Community School.
2) Stress management
Learn about some ways to handle stress with the Cambridge Health Alliance and Somerville Council on Aging. The talk is at 12:30 p.m. at 167 Holland St.
3) Bicycle Committee
The Somerville Bicycle Committee meets tonight at 7 p.m. at Somerville City Hall.
4) Next Wave and Full Circle School tree lot
If you still need a tree, the Next Wave and Full Circle School tree lot is selling trees for two more days. Head over to Foss Park from 4 p.m. to 8 p.m. to get one.
Today will be rainy with a high around 50.