The Portland State University Chamber Orchestra and cast members from the PSU Opera Theater will perform an all-Mozart program at 7:30 p.m. Saturday, April 5 at the Liberty Theater, 1203 Commercial St.

Thirty-five musicians from PSU will perform the overture and highlights from "Don Giovanni." Also on the program is the Horn Concerto in E-Flat major and the Symphony No. 35 in D Major, the Haffner Symphony. Performing with the opera theater students will be soprano Katherine Matschiner. She will sing the revenge aria "Non MiDir" from "Don Giovanni."

Matschiner teaches voice lessons at Clatsop Community College and has nothing but praise for the PSU musicians who will be performing. "We are blessed to have them sing for us," she said. "They are way ahead of what a usual college student has achieved. I wasn't even that good at that age."

"Don Giovanni" is the second of the three masterworks Mozart wrote in collaboration with librettist Lorenzo da Ponte. The opera is based on the legend of Don Juan, and was featured in the film Amadeus. The Horn Concerto in E-Flat major is an exuberant work, ending in the liveliest of all Mozart's hunting finales. Horn soloist Keri Dodds will be performing this difficult work, which tests the soloist both spiritually and physically.

Conductor Keith Clark is excited about returning to the Liberty Theater, where the extraordinary acoustics make performances particularly outstanding. The intimate scale of the Liberty is ideally suited for chamber orchestra works, where the quietest note can be heard from every seat and no view is obstructed.

Matschiner is impressed with the PSU musicians repertoire and noted that the internationally famous Clark has taken the orchestra to new heights. "They are doing the full Giovonni, which is quite an undertaking," she said.

PSU Opera Theater will present the full production of "Don Giovanni" at 7:30 p.m. May 4, 6, 9 and 10 as well as a 3 p.m. matinee May 4 at the Lincoln Performance hall under the artistic direction of Ruth Dobson and musical direction of Clark.

Matschiner has performed previously at the Liberty Theater in Handel's Messiah and as Mabel in the North Coast Choral production of "Pirates of Penzance." After living in New York City for the past seven years Katherine has performed as a soloist in Weill Hall at Carnegie Hall, Merkin Hall, The Danny Kaye Playhouse, DiCapo Opera Theater, Amato Opera Theater, The Westchester Opera Company, The New Jersey Bel Canto Festival Series as well as many others. She has also performed recitals in New York and in Italy at the famous Teatro Verdi, and in the Chiesa di Dante in Florence, Italy. Her operatic leading role repertoire includes Gilda in "Rigoletto," Rosalinda in "Die Fledermaus," Manon in "Manon," Adina in "L'elisir D'amore," Amina in "La Sonnambula," Constanze in "The Abduction of The Seraglio," Musetta in "La Boheme," and Lucia in "Lucia di Lammermoor." Concert works include Mozart's "Requiem," Orff's "Carmina Burana," Handel's "Messiah," Poulenc's "Gloria," Bach's "St. John Passion" and "The Christmas Oratorio." She will be performing E. Chausson's "Chanson Perpetuelle, Op. 37" along with classical musical ensemble Con Amici May 16 presented through CCC's Arts and Ideas program.

The Liberty Theater performance is a benefit concert in support of the Astoria Music Arts Festival and Institute, which is July 7- July 20. The first week will be devoted to the Institute, where 25 pre-professionals and intermediate students will study voice under the direction of professional instructors.

The institute will be followed by 10 days of concert and vocal music, and three performances of "The Marriage of Figaro." Katie Harman, former Miss America, is expected to participate in "The Marriage of Figaro" during the festival. The festival and institute are programs of the River Theater. Matschiner, festival director and founder, hopes to raise $5,000 during the PSU concert.

Tickets for this event are $10 for adults and $7 for students. Tickets will also be sold for the post-performance cast party, where attendees can meet and welcome the artists. Season tickets for the Music Arts Festival will also be available.

Tickets can be purchased in advance at the River Theater box office, 230 W. Marine Drive, open 2 to 5 p.m. Wednesday through Friday and one hour before all River Theater performances. Call (503) 325-7487 for more information.