BACH: The “Magnificat” will be performed as...

BACH: The “Magnificat” will be performed as a memorial to Esther Andreas, former head of the voice department at Cal State Los Angeles, by her former students; First Baptist Church of Pasadena, 75 N. Marengo Ave.; 4 p.m. today (free).

GAY ISSUES: The Rev. Dan Smith, pastor of West Hollywood Presbyterian Church, will speak at the First Presbyterian Church of Baldwin Park; Stewart Avenue and Los Angeles Street; 10 a.m. today. (donations).

DOWNEY SELF-ANALYSIS: Downey City Councilwoman Joyce Lawrence will hold the first of a series of informal meetings for residents who want to discuss community concerns; 5 to 6:30 p.m. Wednesday; northwest corner of Furman Park, 10419 Rives Ave., Downey.

NATURE WALK: Evening tour of Glendora Wilderness Park; participants meet at the yellow gate on Big Dalton Canyon Road, one mile east of Glendora Mountain Road, Glendora; 7 to 8:30 p.m. Monday (free).

ENVIRONMENT: “World Population and the Environmental Connection,” Pasadena Group of the Sierra Club; Eaton Canyon Nature Center, 1750 N. Altadena Drive, Pasadena; 7:30 p.m. Wednesday (free).

FIESTA: Featuring international foods, rides and entertainment; San Gabriel Mission, 537 W. Mission Drive; 6 to 11 p.m. Friday, noon to 11 p.m. Saturday and Sunday (free admission).