Best tempo app!

As a fitness instructor I need music at different speeds. This app is THE best for that. I can take a cardio cd and lower the tempo to a muscle cd speed by sliding it down. If I want to add a cardio burst in a slower cd, I can slide it up and increase the tempo instantly! Its easy to use and totally convenient. When o have a question, the YesFitness people answer almost immediately! Great people, greet product! PThank you, YesFitnessMusic! You are the best!!!

Robyn O about Tempo Magic, v3.1.3