The Quad City Symphony's March 8 concert featured symphonies from a pair of big names, but the shortest piece on the program - the world premiere of local composer Jacob Bancks' Rock Island Line - stole the show.

The broad, moving lyricism of Brahms' Symphony No. 2 illustrated what the orchestra does well, while Beethoven's Symphony No. 8 revealed the Quad City Symphony's continuing struggle with rhythmic precision.

Yet they were eclipsed by the triumphant debut that opened the concert. Rock Island Line was the highlight of the evening at the Adler Theatre - an energized, complex, and entertaining performance that brought Bancks' vivid piece to life in ways I wasn't expecting.

The first Masterworks concert of the Quad City Symphony's 99th season was a checkerboard of strengths and weaknesses. Huge, transcendent moments filled the Adler Theatre in the October 5 concert, but when things got quiet, discrepancies in tone color, balance, and rhythm appeared.

Under the direction of Music Director and Conductor Mark Russell Smith, the orchestra explored four diverse approaches to composition in reverse chronological order. Commissioned by the Quad City Symphony, the world premiere of American composer Michael Torke's Oracle opened the program, followed by fellow countryman Aaron Jay Kernis' Musica Celestis, featuring only the strings. The mid-20th Century's Young Person's Guide to the Orchestra, by British composer Benjamin Britten - with humorous narration by local media personality Don Wooten - completed the first half. After intermission, pianist Jonathan Biss joined the orchestra for Johannes Brahms' Concerto for Piano No. 1.

The concert was an elegantly designed program that included a variety of contemporary works balanced by a classic masterpiece, but - except for Torke - it was not a good selection of music for this orchestra. In the tutti sections, when all the instruments were played, the mixture of timbre was profuse. Yet as the scoring broke down into smaller instrumental combinations, the differences in individual colors became more problematic. The result was tonal incompatibility both among the same instruments and between instrumental families.

The Quad City Symphony next month will launch a 2012-13 Masterworks Series that takes a step back from last year's ambitious, adventurous, and modern programming and instead plunges into the deep end of 19th Century Romanticism.

Gone is the wide-ranging repertoire that musically delineated the four main historical style periods spanning 300 years, from early-18th Century Vivaldi to a world premiere by local composer William Campbell. Gone are the global concept of Britten's War Requiem, the eclectic contrasts of Modernism, and the contrapuntal complexity of the Baroque. And, by focusing on swing music for the February Masterworks concert, the symphony has effectively eliminated one of its season's six primary showcases for classical music.