I've played upright bass for a long time. But because of the types of music I do, had let playing with a bow slide for a very long time. Years. So I've been practicing for a month or so, and decided to do a tune featuring a double bass that wishes it was a cello.
The underlying structure of this mostly comes from mechanical sounds from the BBC archive. Factory noises, a film projector.
There's a MIDI piano instrument called "Una Corda" too. And Lake Parima was a nonexistent lake in South America that Europeans looked for for a long time (the fabled city El Dorado was supposed to be on its shores) before realizing it was a lost cause.