Comment:
Many Catholics still find singing in church a problem, probably because of the rather individualistic piety that they inherited. Yet singing has been a tradition of both the Old and the New Testament. It is an excellent way of expressing and creating a community spirit of unity as well as joy. Ephrem's hymns, an ancient historian testifies, "lent luster to the Christian assemblies." We need some modern Ephrems—and cooperating singers—to do the same for our Christian assemblies today.
AmericanCatholic.org
It doesn't say a good soprano, alto, tenor, baritone or bass voice.
Just a joyful voice. Everyone needs to sing joyfully, regardless of their vocal abilities in my opinion!