Harmonia, the contemporary choir of Our Lady of Lourdes Church in Northridge, is holding its third annual summer concert "under the stars" July 30, featuring songs by two of America's greatest composers: Cole Porter and Irving Berlin.

Table reservations are available at $38 for four and $75 for eight. Overflow seating for a $10 donation is also available. Proceeds from the event will be used to underwrite a choir family retreat with the Sisters of the Sacred Heart in Big Bear. For table reservations, contact Audrey, (818) 667-9012. Gates open at 6:30 p.m.; show begins at 7:30 p.m.