When I made my first doubles I thought of them as two person didges. You can do that. It's kinda weird and you might be so intrigued that you might be late to notice the weirdness so I'm just tellin' ya now.What they really rock at are for flanging that second mouthpiece with your palm, changing it from a mid C# to a low Bb. On the shorter mouthpiece it goes from mid D to a low Bb. The trumpet successions can be done open or closed too. There's a ton of notes you can pull out in different combinations. The trumpets come easy. Backpressure is sweet. Super easy instrument to play. Love it!