America’s musical traditions, from blues to Western swing and R&B, will be represented next Saturday and Sunday during the 38th annual Dance Palace Silent Auction and Blues, Brews and Oysters festival, the community center’s biggest fundraiser of the year. Blues musician Quinn Deveaux and the Blue Beat Review will headline the first concert, which costs $20 for adults, $18 for seniors and $10 for children and will also feature the Left Coast Syncopators. A free…