LENOX—The past weekend at Tanglewood was dedicated to young conductors, familiar soloists, and patches to the Boston Symphony Orchestra’s repertoire: Programs were sprinkled with BSO premieres. Some were understandable. Jennifer Higdon’s “blue cathedral’’ dates only from 2000, and Mendelssohn’s violin-and-piano Concerto is something of a rarity. But Franz von Suppé’s “Poet and Peasant’’ Overture? That venerable chestnut, it turns out, had never migrated from the Pops library.
Friday night brought back former BSO assistant conductor Ludovic Morlot, soon to take over the Seattle Symphony. The soloist was soprano Dawn Upshaw, in superb voice in “Three Songs’’ by Osvaldo Golijov: dark, lyrical, long-breathed melodies, suiting her heady clarity and visceral phrasing. (The high, starry benediction of “Lúa descolorida’’ was especially fine.) In Canteloube’s “Songs of the Auvergne,’’ Upshaw was perhaps too interpretively generous, over-tinkering her voice to delineate the storytelling; it didn’t always work, but when it did — a yodeling yawn from chest voice into a piping sigh for the spoiled housewife of “Oï, ayaï,’’ for instance — it was delicious.