Master a single song at a time by repeating it several times. Use it to practice tapping, sliding, tapping and holding, rapid tapping and other control methods. Get into the proper rhythm. Do not rely only what your eyes see onscreen. Each song has a particular beat per minute that can be used to go with the flow. Use the visual clues to know when to start, then rely on rhythm to guide your actions.
Symbols
Each stage features a symbol, such as a disco ball, star, or spray paint. If you are building your robot, focus on matching the symbol with the stage that you are playing next to get bonuses that can lead to earning more stars.