This was originally written for Maurice Andre by Claude Bolling. Arturo must have recorded this not long after at all as he was still in Cuba then. The second movement is written for Eb trumpet so Arturo playing it on Bb is pretty impressive. He said on a recent video he had never played an Eb trumpet up until a few years ago.
For those who are interested: I found a Tuba version (!) of the piece (with the help of Discogs) ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-etvXes9KiOM.html