April 21 and 22: Chorus Austin will present Haydn's Stabat Mater April 21 at 7:30 p.m. and April 22 at 3 p.m. at St. Matthew's Episcopal Church in Austin. This is a hymn to Mary standing at the foot of the cross. Tickets start at $15 each. Details: www.chorusaustin.org or (512) 719-3300. Chorus Austin will present Haydn's Stabat Mater April 21 at 7:30 p.m. at St. Matthew's Episcopal Church in Austin. Tickets start at $15 each. Details are available at www.chorusaustin.org or (512) 719-3300.