Know Your Power-Ups 1
The AutoBlaster is the first power-up you'll be able to use in the game. You're allowed to use it once you start playing a track after completing the mandatory Basic Training tutorial. It allows you to zap all of the notes on a track to turn it on for a while (lasts for 13 bars).
If you're on a difficult track in a song, and you feel like you may miss a note, use the AutoBlaster before you reach the end of your current bar to activate the track and preserve your multiplier. Don't forget to move onto a nearby track and start hitting notes!
- Silvanus