Probably a guitar tuner. If you have an apple iphone, this app is unbelievable! If you like to possess a devoted tuner the KLIQ “UberTuner” will operate. If you are practicing routinely, like you need to be (at the least the moment daily) you should definitely improve your guitar http://comoaprenderatocarviolo22975.blue-blogs.com/7316658/how-to-learn-how-to-play-guitar-options