Jazz musician here. I saw a little square piece of paper pinned to a board that suggested you get this app because “the house band is missing their lead soloist so you grab your phone and save the day!” I paraphrase of course, but after seeing that, my first thought was “there’s no such thing as a lead soloist,” and my second thought was “who in their right mind thinks an app is a suitable substitute for a lead soloist?” but I decided to give the app a chance. I download it and open it and it gives you a display of 6 different settings/styles. Only one is available in the free version “smoky jazz” so I try that one. When you select a style, you can tap on the blank screen to play a G minor blues scale with a vibraphone sound. There is a play button at the bottom which when pressed will play a backing track. A simple minor blues, nothing wrong with that. You can then play along with the backing track and sound like a reasonably okay high school vibraphone player. However, it gets old quickly. This is an app for anyone younger than 10 and doesn’t play a real instrument. The suggestion that anyone musician would unironically bring their phone to a jam session and tap their screen to a minor blues scale is absurd. However, I’m sure I’ll have a lot of fun bringing it to my next jam session and having a good laugh with it when we call Miles Davis’ All Blues.