A metronome is any device that produces a regulated aural, visual or tactile pulse to establish a steady tempo in the performance of music. It is a useful practice tool for musicians that dates back to the early 19th century.
Metronomes are THE most important learning utensil in one’s toolkit. It keeps the beat for you. Obviously you can’t carry a drummer with you. Since the launch of Apple’s iTunes App Store, there have been a ton of cool apps – many of which are free.
Here’s my video on Metronomes and Beats Per Minute (BPM):
If you don’t have an iPhone, then consider using Metronome Online’s Cell Phone Metronome. If portability isn’t an issue then there’s also the option of using a website for a metronome like Seventh Strings or like ‘The Weird Metronome‘. So use those if you have a laptop with you. In addition, there’s always the option of using Garageband or a sequencer like that, too.
In conclusion, you have alot of options available to you, so there’s no excuse not to use a metronome. Besides, it’ll make you a better musician – and that’s the end goal, right?!