You might think that the vibrato styles in this article sound a little ‘old fashioned’ by modern standards. To my ears it is far more musical than the post ‘80s, wide metal vibrato that is still prevalent today. It was certainly applied in a more discerning way by the blues-rock guitarists; notes often sustained with vibrato being gradually applied, sometimes no vibrato would be added at all. This is more akin to the way a vocalist would use the technique. You can check just how conscious your application of vibrato is by playing a solo without any vibrato (record yourself for the brutal truth!); you may be surprised by the results.