Theatre performances are live dramatic or musical productions presented to an audience on a stage or in another performance space. They may be staged by theatres, touring companies, independent producers or community groups, and can include plays, musicals, comedy, dance-drama, family shows and adaptations of books or historical events. Performances range from newly written work to established productions, with casts, directors, designers and technical teams contributing to the final presentation. Customers can typically expect a scheduled performance, with tickets or other admission arrangements set by the organiser. Productions may use scenery, costumes, lighting, sound, music and props, and some venues offer facilities such as seating, refreshments, accessible entrances or audio description and captioned performances. The format, length, age guidance and accessibility provisions vary between productions, so details are generally provided by the venue or presenting organisation.