How to Sing Vibrato
Some will tell you that singing vibrato is something that just happens naturally. This isn’t necessarily true. It is something that the singer has control over and can turn it on and off. And the singer can also control the rate of oscillation. To slow is called a wobble and too fast is called a shake. There is a middle ground somewhere around 7 oscillations per second.
Now, vibrato is an overflow of a healthy voice, but, again, it’s not just natural. And what I mean by that is it’s not that you either have it or you don’t. So, if you don’t have it you can’t have it. That’s just not true. Anyone, with some work, can learn to sing with vibrato.
Because vibrato is an oscillation of pitch, you can sort of get a feel for it, a starters vibrato of sorts, if you slowly oscillate between two pitches back and forth and get faster and faster.
Another practical way to give it a try is to mimic an opera singer. Many people discover their vibrato just by horsing around at first. Once the voice starts to get a feel for this oscillation, it will begin to develop it for real.
Another thing you can do is make the sound that kids make when they are mimicking a ghost, “OOOoooOOOooOOooOo”. These silly exercises will help give you a start in singing vibrato.
Hope this is helpful!