Andrew pulls out his Android phone and opens VoiceComposer. He is greeted with a large microphone button.
He pushes it, and is prompted to count off a measure and then start singing.
As he counts off four beats ("one, two, three, four", or just snapping his fingers), a bar appears on the screen that starts pulsing at the tempo he specified. Measure bars start scrolling past at every fourth beat. (If he'd counted off to some other number, they would be scrolling past with different frequency.)
Andrew starts whistling his tune, and the notes he's whistling start trailing from the bar with the passing measures. They automatically change their shape to fit different times, and are attached to boxes that show their time.
Andrew taps the screen to stop the recording. The song is automatically saved in his 'notation' folder with the current date and time, and he's asked whether he wants to record another song, go to an editing/playback view for the the song he just recorded, look at his saved notations, or exit the program for now.
He chooses to play back his song and see if he wants to edit it. The notes of his song appear in the editor.
He taps the first bar line to play back his tune. It plays. He decides he wants the second note to be a bit lower, so he drags it down a bit with his finger. The note plays as he holds his finger down on it, changing as he moves it up and down.
He also wants to transpose the entire piece up a bit, so he double-taps to bring up the menu, chooses 'edit'->'select all', and then drags a note up to transpose the whole piece.
