Irish Concert at Shopper's Cafe on Friday

Take a look at what's happening in Waltham on Friday. 

-Weather forecast -- 73 degrees and sunny.

-Shopper's Cafe will host "The McMurphys" at 9 p.m.

-Don't be surprised to see Waltham Police at the Whittmore school more.

-A free Zumba class will be held at 6 p.m.

-The Waltham Public Library will host a children's play group at 11 a.m.