Better on my iPhone than a call from Jamey Abersold!! A clear and concise start to improv with a modest requirement of prior knowledge. Sound bites are very relative and useful. I've checked out all the JAM-A-LONGS and playing examples. Everything works well and loops smoothly. Tempo range is appropriate for any situation and level. Transposition for other instruments works perfectly and all menus have a simple, logical layout. Not visually flashy (certainly doesn't need to be) but works exactly as you would want it to. I'll be investing in their other products and enjoying the value. You could spend way more money on products that are only marginally useful and really regret it after you check out this collection of apps. Great work and thanks to ilmprov!!!

This app is amazing (fundamentals). I was looking for different ear training apps and came across this app. I was stunned as this was everything I wanted and a TON more. The jam a long tracks are awesome. I immediately took a chance and purchased it and am glad I did. I'll be getting the ii-V version next. Im thinking the reviewer who stated that the app had the wrong key didn't realize that you could change the key of the app to the key of your instrument in the settings. I'm playing an alto so I changed mine from C to Eb...

Downloaded for my son to use in his jazz studies, and I use it to learn some music theory myself. Was a bit concerned at first about transposition problem mentioned in another review, but in looking at the app, I suspect the reviewer failed to use the transpose feature on the app. No problems for us with transposition. Well worth the price.

Thanks for the prompt update; I'll be downloading all of your other iImprov apps now- and recommending them to my students, as well.