I managed to update Thunderbird from version 78, which was from the MX Testing repository, to version 91, which I found as a flatpak. Transfering the old profile was not so easy, but when it worked, it worked painlessly.
Along the way, I had to grow the size of the root partition on my my hard drive, by skimping on the swap directory, but that also worked easily. It turns out that you can grow an ext4 partition to the right, even when it is mounted.
With the help of SoundCloud I continue my exploration of mainly MENA Music. It just turns out somehow that one thing leads to another and almost all the tracks and the musicians I follow end up being from there.
True Sorry, by Ibrahim Maalouf https://soundcloud.com/adham-safena/ibrahim-maalouf-true-sorry
"Ibrahim Maalouf is a trumpeter who is also a composer and arranger for trumpet. He also teaches trumpet. He was born on December 5, 1980 in Beirut, Lebanon, but now lives in France.
He is the son of trumpeter Nassim Maalouf and pianist Nada Maalouf, a nephew of the writer Amin Maalouf, and the grandson of journalist, poet and musicologist Rushdi Maalouf. He is currently the only trumpet player in the world to play Arabic music with the trumpet in fourth tones, using a technique his father invented in the 1960s. Ibrahim is also the winner of some of the greatest classical trumpet competitions in the world."