Yeah, Einstein proved that Queen sounded best with one Freddie Mercury as the singer with some guy called John playing bass. Oh, and the curly haired Dr and raspy voiced drummer added on would round it all out. He also said that an overdose of Lambertisms would e bad for one's health,.
"Help me please, is there any scientific study of Queen music?"
Define 'scientific'. Unless you would like to see acoustic waveform analyses, there is very little hard science you can unleash on music, so it'd be very helpful if you explained what you meant by a 'scientific study'.
"Scientific" - studied by humanities disciplines: art history. music theory, aesthetics, cultural studies. Studied by methods these disciplines. For example, I heard about the impact aesthetics of Baroque on Freddie's music , but never met this study .