This is a Workspaces modular desk system. This was purchased for $1500 new as it is very high quality. It has the main workstation with articulating keyboard, corner table and table extension. It is created to be flexible in how you want to arrange it. The pictures show only a couple of ways to arrange. It is also easy to take the legs off and separate pieces for easy transportation.
The keyboard is in excellent condition. The bench has a few dings.
From the Yamaha site:
88 lightly weighted, piano-style touch sensitive keyboard with stand, sustain pedal, SmartMedia™, notation & lyric display, USB for plug & play compatibility.