The Pittsburgh Symphony Orchestra is rolling back ticket prices to 1998 levels, and offering a new package of discounts and ticket deals in an effort to get more people into their hall for the coming season. Aside from being simply cheaper, the new ticket plans give subscribers more options to tailor the concert schedule to their own life, a strategy more and more orchestras are adopting. The PSO is running at a deficit, and is also searching for both a music director and a new chief executive.