This app is an indispensable and vital tool for any musician or recording engineer that is looking for the right microphone for the right instrument and how to use it. Allen Sides is considered the world's leading authority on vintage and contemporary recording microphones and their uses. Allen owns the world's premier microphone collection. He is also the owner of Ocean Way and Record One recording studios, is a legendary grammy-winning engineer with close to 40 years of experience, and has worked with everyone from Frank Sinatra to Green Day. In this app, learn his secrets on how to pair the right microphone with the right instrument with its optimum placement. This app also contains a comprehensive list of microphones and instruments and gives diagrams and specs on each.