This is the menu screen, and the first screen you see upon opening. Initially, the left side will be empty. It will fill with your song list once you start playing.
To get started, press the "Add Song" button. This will bring up a list of music stored on your device. Choose a song, and the analysis will start. This might take a couple minutes on older phones, but it only has to be done once per song.
Once you have at least one song in your song list, select it and press the "Play" button to play!
Of course, there are other options. To see these, press the "Settings" button. To remove a song from the list or see detailed score info, long-press on the song in the list.
Oh, and one more thing... the icons you see are score indicators. It shows the highest you've gotten on each song. In order, these are:
Blank Star - Less than 80% hits
Bronze Star - Over 80% hits
Silver Star - Over 92.5% hits
Gold Star - Over 97.5% hits
Bronze Crown - 100% hits
Silver Crown - 100% "Good" hits
Gold Crown - 100% "Perfect" hits
This is the main gameplay screen. For an explanation of each item...
1 - Keyboard
This is the main keyboard. Each key matches a note. Tap here to play notes. Tap multiple times on a note to earn extra points.
2 - Bonus Gauge
This fills up as you hit notes. The better the hit, the more it fills. Misses drop this bar by 20%. You get a bonus based on how full it is. A full bar is worth 10x the points!
3 - Flash Streak Gauge
This fills up each time you hit a note. When it's fills to 20 notes, a bonus note will appear. A miss will empty this gauge.
4 - Flash Streak Multiplier
When you hit a bonus note, this multiplier goes up, and the streak gauge will start to refill. Of course, if you miss, it goes back to 1x.
5 - Notes
These are, well, the notes! When they reach the top of the keyboard, press the matching key.
6 - Score
Does this need an definition? Yes? Ok, it's your current score.