Sounds and Scenes Festival. Olmsted Park-Brookline side of Leverett Pond. 10:00 a.m. to 1:00 p.m. Featuring concerts and a variety of participatory activities geared primarily to younger children. All activities will directly or indirectly involve music, sound, or some connection to the outdoor landscape and nature. Ages 3 to 10. Free. (617) 730-2700. www.brooklineadulted.org

*All activities are in Olmsted Park & will end at/near the main festival venue, Allerton Overlook, Brookline side of Leverett Pond

"Birding By Ear" Walk: Daisy Field parking lot, Willow Pond Road, off the Jamaicaway, Jamaica Plain

StrollerFit Class: Front of the Pond Avenue parking lot, off Rt. 9

"Sounds of Spring" Walk: High Street Hill Association table, near Allerton Overlook, Brookline