Roger's vocal range

IMO Roger was just simply more confident with hitting high notes. Freddie had powerful voice with a beautiful "colour", but wasn't that confident, especially on stage. As Montserrat said once, he was shy about he's voice and only she persuaded him to sing with everything he had. Roger was confident with that from the very begining. That's my opinion of course...

Fred sang the Db5 in Milan's 1984 Impromptu

I think Fred got tired of singing all the concert so he had more problems doing high notes than Roger, who only sang in the choruses, but still the highest notes of the band on stage are by Freddie (Impromptus)

Nah, I don't think it had much to do with tedium. In most Works shows, his voice would limit him to Ab or A at best, and it would slightly crack at that point. He didn't hit the high notes because he couldn't. He didn't take care of his voice, and it shows.

I'm with Fenderek and Seb

yes he didn't take care, note how in Japan 79 he was clearly with a cold and still he took off his shirt

Roger's vocal range (at least recorded) goes from A1 (Ride The Wild Wind, Demo) to E4 on head voice (I'm In Love With My Car) and C5 with falsetto (Seaside Rendezvous)

Freddie goes from F1 (All Dead, BoRhap) to E4 (Hang On In there) with head voice and C#5 with falsetto (1984, Milan, Improptu)

Brian goes from F1 to D4 on head voice and F4 with falsetto, all of them on 'Resurrection'.

Brian didn't sang that High A on 'frightening me' and Freddie didn't sang a Bb4 on the 'For me' part. Freddie sang an Ab4 while Roger is singing the Bb4 (Ab is the minor seventh of the Bb7 chord, which is the chord played on that part.)

very cool, then it's perhaps a nine part harmony, which would be the biggest used in the band

Freddie was a chain smoker though, so that probably contributed to him not always reaching the high notes.
Sorry to change to Freddie's vocal range from Roger's but didn't Freddie also get a pretty high note in 'Don't Lose Your Head' and that was the late eighties.

And Roger achieved a high note in More of that Jazz, and sung particularly well in Rock It

Where on the piano is an F4? I know as much about music theory as I do about the native tribes of darkest Africa.

F4 is 1 octave and 5 semitones above central C

Well i dont want to be the one disagreeing but where do you get the idea Roger is more confident live? Roger just has a good voice wich lends itself for some high notes and backing up Freddie. Fred litteraly gave everything every night and then a backing vocalist like Roger comes in handy (i dont think Fred actually new how to sing without doing it full force). The reason Roger hits the high notes is because he has a high voice. But there is a difference between singing some back up vocals here and there and singing two hours on the level Freddie did. Roger cant even do that on one song (listen to ga ga in amsterdam and tell me how confident he is)let alone four times a week, two hours a show (let alone while dancing around on stage). I sing myself and i know there is a big difference between fooling around and doing some backing vocals or singing two hours on the top of your longs. That demands talent and technique. Roger has some talent, but no technique at all. further Roger actually had a cool sounding voice but its not that strong or loud. Listen to ,I believe magic years, and hear Freddie and Roger warming up their voices. Roger gets blown away in every aspect.
Further Fred was not insecure about his high notes. I dont believe Fred was insecure about anything (except maybe his teeth). He was insecure about his voice when playing with Caballe, well ofcourse she was his idol and one of the best female vocalists on the planet. On stage with queen Freddie ofcourse wasnt insecure about hitting high notes, he was a rock-god and one of the best vocalists live and he knew it. Freddie just coulnt reach all the high notes all the time live, because its just plain impossible to do that.

I don't think Roger has a higher voice than Freddie, only that they worked that way. Fred could do the low part and Roger the high part, but if Fred did the high part Roger couldn't do the low part.

Besides I think nerves do affect here. Fred was a showman and all of that, but as Roger said in the Wembley interviews, he was more nervous than the rest because all the eyes were looking at him. Roger didn't have that pressure, besides he didn't get so tired in the throat, he just had to sing in the choruses.

Fred didn't take care of his voice, and after something like Impromptu it's understandable his throat got exhausted. If Roger sang Impromptu I think he should have to shut up for the rest of the day.

Just an opinion

"I don't think Roger has a higher voice than Freddie, only that they worked that way."

Why?? do you think he's God?

I don't understand your question, what relation has the voice with the god or not god condition?

'Besides I think nerves do affect here. Fred was a showman and all of that, but as Roger said in the Wembley interviews, he was more nervous than the rest because all the eyes were looking at him.'

Thats true but that there is a different between being nervous and being insecure.
Some people on this board always like to turn Freddie in this insecure lonely little boy, wich he wasnt. He knew what he was doing and he did the most incredible things live. So if he missed a note it was due to throat problems after a extensive tour and not because of insecurity.