When Mountain Man began a decade ago, it consisted of three close friends arraying their voices in a resplendent blend, often without so much as an acoustic guitar for adornment. Today, the configuration remains exactly the same, except that all three members — Alexandra Sauser-Monnig, Molly Sarlé and Amelia Meath — have developed strong solo identities along the way. Sauser-Monnig also records wonderful folk-pop songs under the name Daughter of Swords, Molly Sarlé released a magnificent single under her own name earlier this year, and Meath is the singing, dancing half of the transcendent synth-pop powerhouse Sylvan Esso.