The one hundred twelfth album: #112 Os Mutantes - Os Mutantes
Listening to this, I feel like I'm still trying to define where tropicalia fits in. It has elements of samba in it, but with more rock influences and a larger soundscape. Not to the point that psychedelic rock has it, but there are more effects in the album, distortion from guitars and other weird sounds that make it sound like far more than a recording of a concert like samba would be. It's not just a party, there's more in here and the experiments pay off.
There are also parts where it gets more gentle, O Relogio already getting calmer and gentler. It's surprising how that doesn't actually stand out, but there's a spectrum where there might be weird sounds, but it's not full on party. It made for a better than if I were to have the samba-inspired rock playing the whole time. That variety, coming from the many different sources the music draws from, makes for a great, varied album with a good mix of songs.