How does the orchestra prepare for a cadenza?

In an orchestra, preparation for a cadenza typically involves the conductor signaling the transition, often by slowing down the tempo or using a specific gesture to indicate the soloist's entrance. The orchestra will usually play a cadence or a brief musical passage leading up to the cadenza, giving the soloist the opportunity to showcase their skills. During rehearsals, the conductor and soloist will collaborate to ensure the timing and dynamics are well-coordinated, allowing for a seamless transition into the solo passage.