Queen's inside collaborations

I try to make the complete list of Queen's collaborations to each other solo projects, but there questions still are. So:
Star Fleet Project (Brian) - Roger (back-vocal on 'Star Fleet')

Strange Frontier (Roger) - Freddie (back-vocal on 'Killing Time' and I'm sure co-author because of middle of the song)
John (bass on 'It's An Illusion', remixed 'I Cry For You' for 12")

Mr.Bad Guy (Freddie) - Brian (lead-guitar on 'She Blows Hot And Cold', released only on the FM Box Set)

The Great Pretender (Freddie) -....? OIQFC says Roger sings back-vocal, but I can't say that I'm sure. It could be Peter Straker or Freddie by himself. Roger's video appearance is not evidence, so some help needs.

Shove It (Roger) - Freddie (lead vocal on 'Heaven For Everyone' and helped with 'Shove It', but how? Mixed all those Queen samples?)
Brian (lead guitar on 'Love Lies Bleeding')
John (History says he was there, but where exactly? I don't think he plays bass as it's stated, because I can't see reason - his bass guitar is not like the Red Special or unique Freddie's voice, so why Peter Noone couldn't played? Maybe some mixing?)

Barcelona (Freddie) - John (bass on 'How Can I Go On')

Back To The Light (Brian) - John (bass on 'Nothing But Blue')
That's all! But questions are left...

Is this like Jeopardy, where we have to guess the questions?

What is, correct.

Serry Funster wrote:

I try to make the complete list of Queen's collaborations to each other solo projects, but there questions still are. So:
Star Fleet Project (Brian) - Roger (back-vocal on 'Star Fleet')


Shove It (Roger) - Freddie (lead vocal on 'Heaven For Everyone' and helped with 'Shove It', but how? Mixed all those Queen samples?)
Brian (lead guitar on 'Love Lies Bleeding')
John (History says he was there, but where exactly? I don't think he plays bass as it's stated, because I can't see reason - his bass guitar is not like the Red Special or unique Freddie's voice, so why Peter Noone couldn't played? Maybe some mixing?)

Barcelona (Freddie) - John (bass on 'How Can I Go On')

Back To The Light (Brian) - John (bass on 'Nothing But Blue')
That's all! But questions are left...

As for the The Cross-thing with Deaky: as far as I know the album was finished when Rog started to audition the others, because at first it was planned as a solo-album. Thus I think Deakys guest appearance makes sense.

the easy Shove-it-patterns could have been played by Roger himself. There is nothing spectacular on those bass lines. Maybe Deacon just played some rehearsals with Roger. I doubt he is on the record. (Listened to it about 10 years ago)

I'll check the liner notes, I seem to remember its stated there, isnt it ? Havent touched that album for years as well... ;-)

Mr.Bad Guy (Freddie) - Brian (lead-guitar on 'She Blows Hot And Cold', released ONLY on the FM Box Set)

It was the B-Side of the 12" Made In Heaven FM 1985.

You're wrong, it (version with Brian's guitar!)has never been released 'till the FM Box Set was released.