I just can\'t put the Technopipes down. I am sure that I have doubled my practice time by being able to play in places like waiting rooms, buses, planes and of course at home when I don\'t want to bother anyone. The ability to adjust the pitch is one of my favorite features as it allows for adjustment to play along with a recording without the \'pain\' of being a few cents off from the recorded pipes. Just remember to take them out of your bag and put them in the bin with your shoes and laptop when going through airport security. Every time I forget , they need to hand search my bag.