'Made in Heaven' Timeline

• Spring 1980: Freddie records It's a Beautiful Day at Musicland Studios in Munich. Engineered by Mack. Piano used was a Yamaha C-7B.
• 2nd September 1983: There's a jam session between Queen and guest celebrities Jim Cregan, Carmine Appice, Rod Stewart and Jeff Beck. The result is a fragment of a song then titled A Little Piece of My Heart. Location: Record Plant in LA. Engineered by Mack and Andrew Bradfield. A Yamaha C7 piano is played (though not the same as the one Freddie played in Munich).
• May 1984: Freddie records piano, synths and vocals for Made in Heaven and I Was Born to Love You. Sessions produced by Freddie, co-produced and engineered by Mack, assistant engineer Stephan Wissnet. Equipment: Yamaha C-7B piano, various synths (chiefly Oberheim OB-Xa and Roland Jupiter 8).
• May 1987: The Cross record Heaven for Everyone at Mediterraneo Studios in Ibiza. Freddie pops in for a visit and asks them to let him sing it. David Richards co-produced and engineered.
• 1988: Queen record My Life Has Been Saved, with David Richards as co-producer, engineer and guest keyboardist (uncredited). John (who wrote the song) was absent in March, July, August, October and December, so we can rule out those months.
• July 1988:  During a break from the recording sessions, Brian co-writes and demoes Too Much Love Will Kill You in LA. The song would be completed with the rest of the band later in the year (and possibly also in early 1989). David Richards as co-producer and engineer. Venues could be in London or in Montreux, or both.
• January 1991: Preliminary work on You Don't Fool Me and A Winter's Tale at Mountain Studios in Montreux.
• 10th May 1991: Freddie's vocal track on A Winter's Tale is compiled. He didn't record any other vocal for that song after that.
• 13th May 1991:  Work begins on Mother Love: various vocal bits from Freddie and Brian, keyboards (either one could've played them, on a Korg M-1), guitar (Brian on the original BHM) and a drum-machine generated on either a Linn 9000 or a Korg M-1.
• 16th May 1991:  More work on Mother Love: another keyboard (Korg M1), some more guitar, and John's bass (presumably a Fender Precision).
• 22nd May 1991: Rough mix of Mother Love.
• 13th October 1993: Work on Mother Love recommences at Metropolis Studios in London. Brian's not involved (that day he was playing a solo concert in America), which means that whatever was done on it was by Roger and/or John. What exactly? No idea. Also around those days, John and Roger officially begin working on the posthumous project, sometimes at Metropolis and sometimes at Roger's house in Surrey.
• 25th February 1994: End of the first 'batch' of recordings for the 'Made in Heaven' project. Up until this point, Brian's not involved at all. Roger and John take a break as the former devotes to his solo career and a planned album with Yoshiki (of which only two tracks have been released so far, one incorporated to Roger's album and the other as a bonus track).
• March to June 1994: Brian joins the project, and coincidentally, John goes on holiday.
• Summer 1994: Brian works on the posthumous album on his own, at his home studio. Roger and John not involved in those sessions. Engineer and co-producer: Justin Shirley-Smith.
• Autumn 1994: The three of them go to Metropolis in London to work together, but they soon split up and John goes on holiday, Roger goes on a solo tour and Brian goes home to work by himself on the tapes, especially the songs Fred'd made on his solo album a decade earlier.
• Winter 1994: The three of them work at Brian's studio.
• Spring 1995: Separate sessions: Brian works from home, with Justin Shirley-Smith engineering and co-producing, Roger and John work at Roger's mill, with Josh Macrae engineering and co-producing.
• Summer 1995: The three of them work together on tying the loose ends. Venue switches between Brian's home, Roger's home and Metropolis. David Richards makes the mixes at Metropolis.
• Late September 1995: 'Made in Heaven' finished and mixed.