"Please, sir, may I have some more?" This is a very good simple app, with welcome customizability for vocal range across all the basic vocal warm-ups. Perfect for singers in most vocal genres. For a jazz singer, however, it would be extremely useful to include, or allow us to create, warm-ups in minor and modal keys. Instrumentalists practice their scales in order to be able to fluidly improvise in any key or mode on the stage; vocalists do the same, and this ability would take this app to the next level. That said, this is the app I use each morning, before every rehearsal and every gig.
fearlessk about Vocal Warm Up by Musicopoulos