Mango Grove Steel Band, known for its uplifting Caribbean groove, will perform at 6 p.m. Thursday, Aug. 9, at the last concert in Bates College’s Midsummer Lakeside series. The ensemble consists of a full range of steel pans — lead, alto, guitar and bass — supported by a conventional drum kit and other traditional percussion instruments. The free concert will be in the Florence Keigwin Amphitheater by Lake Andrews. Listeners are urged to bring a picnic and lawn chairs or blankets. Rain site: the college’s chapel, 275 College St. For more information, call 786-6400.