SELBYVILLE, Del. (AP) — It's not every day that a professional musician comes to Melody Oneschuk's band room at Southern Delaware School of the Arts to assist her students, let alone four. A quartet of musicians from the Mid-Atlantic Symphony Orchestra visited Southern Delaware School of the Arts on March 18 to offer a master class to the school's 42-member seventh- and eighth-grade concert band. Percussionist Greg Herron gave pointers to the band's eight percussionists on stick techniques and tips on how to play different instruments, such as the triangle and the bass drum. The students left band class for the day with high hopes for their May 14 concert, when they will play the piece for the masses. [...] they'll refine their skills based on what they learned from the pros.