In the singing world, "tension" is often treated like a four-letter word. But when asking if tension is a bad thing, the real answer is: Yes and No. To grow as a singer, you must learn to distinguish between the tension that destroys a voice and the tension that builds one.
There is a type of tension that is definitely detrimental. This stems from muscle groups fighting one another rather than coordinating. It manifests in several frustrating ways:
On the other hand, there is tension that is absolutely necessary. Remember, we are working with muscles. In order for the vocal folds to vibrate and produce various sounds, they must maintain a specific degree of tension. Without it, there is no sound.
Think of it like the strings on a piano. To produce low pitches, the strings are long and thick with less tension. To produce high pitches, the strings are small and thin and require more tension. Our vocal cords operate on this same principle as they are adjusted for pitch.
When the vocal muscles "play nice" and coordinate effectively, they achieve a state of healthy tension. This is not just a requirement for hitting the right notes; it is also the key to vocal development. Muscles under healthy tension are muscles that are being exercised, which leads to increased vocal fitness and a more resilient instrument. Don't fear the tension—learn to balance it!