I play in a rock/hip hop/funk oriented band, but we are in a broad conception of music, and most of us are very interested with prog music (classic prog band like crimson, ELP, etc... and also jazz fusion, canterbury, electronic, but krautrock and psychedlic/space rock are the main influences in our way to play music). Here's two examples of what we have done, in a chilling / stoner / improvised style , as bands like Causa Sui, Papir, the Spacelords, Zone 6 or Oresund Space Collective without keyboards: