Provide Piano Music for the Weekly Services. Contractor shall provide musical accompaniment on the piano during the weekly worship services to include preludes, postludes, offertories, congregational hymns, and other music asselected during the worship hour; music performed by the choir, and soloists as coordinated by the choir director to include warm-ups of fifteen minutes or less prior to the service. The weekly service shall include the 52 regular services. The totalnumber of services shall not exceed 52.