This means understanding issues that challenge vocal health and how to overcome them, as well as practicing proper breathing, posture, and other techniques related to producing a pleasing vocal sound without damaging the vocal cords. Singers must also be musicians, this means understanding at least the basics of music theory, how music is arranged and produced, and the various performing techniques required of all musicians, such as blending their sound, counting bars and beats, and giving proper “cues” (signals from the Conductor or other musicians about what is happening in the music).