(With this post, DCist starts featuring guest music reviews from our readers. The first one is from DCist contributor Jake Wolman.) Things we were told about Clem Snide before attending their show: “They’re pretty mellow–great music to study to.” “They play fun alt-country indie rock.” “Don’t miss this show.” “They’re a great live band.” “I make sure to see them whenever they come through DC.” We weren’t sure exactly what to expect from Clem Snide,…