Another crucial aspect of preparation is knowing when to schedule performances relative to each other. Knowing thyself is also a necessary element of doing this successfully. Since different types of concerts (a two-hour solo piano date vs. a symphony solo voice performance vs. a jazz combo show vs. a big band concert, etc.) require mastery of completely different repertoire and stylistic delivery, one must be careful to give oneself adequate time between performances for the voice to rest and for the mind and body to fully absorb the next assignment. Having eight shows a week on Broadway is one thing--the show is the same each night for a series of weeks or months, as taxing as that may be--but in my niche, each show (and I mean EACH show!) is different, having a different songlist and most often completely different repertoire. Each concert is advertised very uniquely as being a "one-night-only" event, so symphony conductors, concert presenters and venue owners often help to create the songlist (or at least select the theme) for each singular performance. Challenging for the artist? Very. Rewarding for artists who love to take risks while performing a wide variety of repertoire? Extremely.