Street performers everywhere.  A Dixieland band at Place des Vosges.

Arrival
Neighborhood
Friends
Performers
La Defense
Louvre
Eiffel Tower
Lady Lucille
The Metro
Green Machines
Paris Cops
Homes
Champs-Elysées
Concorde
Vinyard
Vosges
Notre Dame

An opera singer at Place des Vosges.  No music, the guy was just standing there singing, and he drew quite a crowd.

An opera singer in the Metro?  Your metro pass doubles as an opera ticket.