Week 12 of the Medford Farmers Market — the Dog Days of Summer edition — will feature live music by Christian Colegrove from 3 to 4 p.m., Annie Linders from 4 to 5 p.m. and Ryan Alvanos from 5 to 7 p.m. Colegrove performs folk music (covers and originals) with jazz elements and smooth vocals. Linders fronts the traditional jazz band Annie and the Fur Trappers. Alvanos plows the middle ground between Woody Guthrie and Tom Waits. Visit the market’s website for the list of this week’s vendors; several will have special dog-friendly goods, including Proud Dog Apparel’s hand-crafted items.

The Medford Farmers Market takes place from 3 to 7 p.m. every Thursday through October 13.