Music: 'Planets' aligned for Landmarks

The Boston Landmarks Orchestra opens its free summer concert season with Holst's "The Planets" at the Boston Common bandstand on July 8 and 9. And the ensemble, conducted by Charles Ansbacher, has added a couple of bonuses. Landmarks commissioned Boston composer Thomas Oboe Lee to write Pluto, the planet that hadn't been discovered when Holst wrote his piece. And there will be pre-concert talks at 7:45 before both 8 p.m. shows. On the 8th, Museum of Science astronomer Adam Weiss will give a short presentation on the planets. And on the 9th, Boston Phoenix "Moon Signs" writer Sally Cragin will let you in on some, well, astrological nonsense.