Children’s Day Art Park at Symphony Square. Instrument petting zoo, music (at 10 a.m.), activities and a real-life Pied Piper, Wednesday mornings in July. Today’s entertainer is The Biscuit Brothers. 9:30 a.m. to 11:30 a.m. Symphony Square, 11th at Red River streets. 50 cents a child (accompanying adults free). 476-6064; www. austinsymphony.org.