Suzanne Vega recently released her third thematic volume, “States of Being.” It follows two albums culled from her extensive catalog, the first focusing on songs about love, the second on people and places. Thirty years after the singer-songwriter became a Greenwich Village folk scene fixture, she remains a master storyteller with the cool, infectious presentation that crafted “Tom’s Diner” into a classic. She initially labeled “States of Being” as “Mental Health” songs for the vast range of moods and emotions they address. “I like to write about situations in real life and am drawn to many that are difficult to put into words, like the suicide of a close friend,” she said. “The one new song in the collection is ‘The Instant of the Hour After,’ which was inspired by a Carson McCullers story.