This week, take a plunge into the new ambient "swimwave" record from former Portlander Siren and the Sea, head downtown for a dancehall-powered show, and look ahead to the new Beats & Rhymes showcase from some heavy-hitting Portland hip hop names. MUST-SEE: Can’t miss upcoming events. The Thesis: I$$A Arguably Portland’s best regular hip-hop concert series, the Thesis has built a reputation over the last eight years for curating quality hip-hop lineups that consistently fill.