The discographies of the tango orchestras are scattered all around the web. Below is my best attempt to make the relevant links all available in one place. When I found more than one discography for a given orchestra, I chose the one which seemed most complete and reliable. I plan to keep this post updated, so if you think I’m missing something, please let me know.
Update: See here for my current attempt to improve on these discographies. The links below will gradually link to my own discographies, as they become available.