Piano on the street

There are many street musicians in Paris.  But this is the first time that I've seen a street musician playing a piano.  Did he enlist 3 burly friends to haul it from his apartment to the street?  Or perhaps a nearby brasserie, being as it was early - 7:30pm - and having few customers yet, decided to take the piano outside and play where the people were.  Who knows?  Also, as you can see in the photo, it had been raining not long before.