Best ones:

In Ciro Santilli's view, the following three artists form a Holy Trinity of popular Brazilian music:

Elis Regina is not far though.

Ciro remembers quite clearly when he was riding the car with his parents when he pre teen, and he could not understand why they seemed so obsessed with The Trinity et al. Ciro in particular remembers listening to Video "Refazenda by Gilberto Gil (1975)". They had picked it up of course from the 70's and 80's when they were younger.

Young Ciro would also always confuse who was whom from the three of them.

Then Ciro got older, and he understood, they are mind blowing. You do have to look back in time a bit though, lots of lukewarm stuff on later periods. The military dictatorship in Brazil was good for music.

Mostly interpreter of songs written by others. But she's just too amazing, many of her interpretations are better than the original.

God, even Ciro Santilli is slightly shocked by her death, which happened before he was born, can you imagine it at the time? She was MPB's golden girl...

There are no stable isotopes.

Once upon a time in the 2010's, Ciro Santilli went to an artsy theatre venue in the suburbia of Paris, dragged by his wife then girlfriend of course.

In the venue, there was a politician, who was doing his best to show how much they supported the arts, and there were of course the artists, involved in the play.

The politician would see a political power score on top of every person's head, and would spend an amount of time talking to each person exactly proportional to that score. This meant basically one sentence to us. The words themselves didn't really matter of course, only the time spent, they just have to produce nice sounds.

One of the artists however, and he seemed quite important in the production, for some reason spent a huge amount of time speaking to us. The score the artist saw on our heads was of love, or how interested we were in the art.

gobattle.io/#! 2D top down dungeon crawler/brawler, controls feel good.

This is quite in-depth, pretty good.

Unrelated to the Khan Academy.

Cute simple paper-cut stop motion animations videos by Mithuna Yoganathan, a PhD in theoretical physics at the University of Cambridge: www.damtp.cam.ac.uk/person/my332.

This has the seeds of direct good intuition, but often stops a bit too short. Worth a look though, there is value in them for beginners.

Maybe Spanish accent, but might also be from some other european language.

Very practical, low-cost experiments.

Falls a bit too much on the basic side of the the missing link between basic and advanced.

This is very promising.