Down-home diner Singletree Cafe is practically a historical landmark, having served breakfast and lunch to hungry patrons in Healdsburg for decades. But, times are tough at Singletree. Extensive street work, including the installation of a traffic roundabout, has made accessing the diner difficult, sometimes impossible. The sidewalk closures are hitting the cafe in the pocketbook, but local support is on the way with the Save the Singletree event. Headed by the folks at Healdsburg Jazz Festival, this daylong barbecue and concert features a lineup of popular bands and edible delights on Sunday, Aug. 20, at Singletree Cafe, 165 Healdsburg Ave., Healdsburg. 1pm. $20 minimum donation. healdsburgjazzfestival.org.