none, but I've been told by lots of Pros my vocs rates A+... but you can make your own decisions. Fortunately I shed my Ego back in the 80s.
Acid Music, Cool Edit Pro II and my vocs.
PC
I gravitate towards blues. Albert Cummings & Canned Heat are tops. Luv all Motown and Stax. best female voice Mama Cass. Best male voice Nat King Cole or Ray Charles.
The Morning After - J.Geils. Beatles White Album.
Beatles baby since '63 but grew up in a musical house and being sort of a mimic can do a lot of sound-alikes. Luv early rock, blues, old school R&B and Country. A Capella.
Find my original and covers on YouTube at "J. Slick aka J. Ferguson"... mostly a blues-rock styles from the 70's with some country, Praise & Worship and Pop-Rock.
semi-retired... too damn old and broken to do the band thing... but for 30+ yrs have entertained solo in "senior" venues. Will again as soon as the world reopens.