Ortlieb’s will be hosting a show this evening celebrating a pair of new releases. With their latest album Time Traveler (which was co-produced with Jeff Zeigler) slated for release on September 16, the quartet of The Bigness hits the ground running as Kristin Bigness’s vocals craft an intimate yet fiercely powerful setting. Coated in layers of polished rock instrumentation that still holds an emotional grip, the group hits melodic touchstones while an extra gear breaks them loose. With her self-titled full-length debut, Liz de Lise weaves an elegant, vocal-oriented, folk-jazz hybrid, often eliciting an emotional response. However, the sounds can also carry a bubbly, pop sensibility. The tumbling Americana-flavored rock of Flat Mary Road will also get things started. Ortlieb’s, 847 N. Third St., 8pm, $10, 21+ -Michael Colavita