A good warm-up sets the tone for the whole rehearsal.
Start with gentle breathing. Have the team breathe in for four counts and out for eight. This settles nerves and builds breath control.
Move into light humming to warm the voice without strain, then simple five-note scales up and down. Finish with a shared chord, holding it until the blend locks in.
Five minutes of this before every service makes a noticeable difference in tone and confidence.