It’s Easier
This is the most obvious and straightforward reason. If you are a beginner, think about all of the new activities your brain has to process for every note you play. What is the pitch? What is the Rhythm? What is the left hand doing? What is the right hand doing? Is the guitar being held correctly? If you are playing really quickly, you simply can’t process all of this. You are essentially moving your fingers in hopes it will be correct. As you might imagine, this is not the way to advance your skills correctly.
You are Building a Habit of Precision
From the very first notes you play on the guitar, you should be focused on precision. Although the material is new to you, let’s face it, it’s pretty simple stuff. (If you are just picking up the guitar and what you are playing isn’t simple, please consider choosing easier material or a method book.) Spend this time really focusing on playing everything correctly. Only move forward when you feel confident that what you are playing is precise.
In doing this, you will be setting yourself up for success as the material gets more complicated. This is because you are developing the skill of practicing. This is one of the best skills you can possibly learn.
You Have a Stronger Connection with the Rhythm
Try this: Count 1, 2, 3, 4 at a very fast pace. Tap your foot along while you’re counting. Now try counting again, but much slower this time. Notice how your voice really connects with the tapping of your foot. Maybe your head will subconsciously start to nod along with the beat. Slowing down gives your entire body an opportunity to feel the beat, which means you will really connect with the rhythms you are playing on the guitar.
Success on any instrument relies on rhythmic proficiency. Since guitar is a plucked string instrument, it is extra important to have a very solid sense of rhythm. By playing fast, you are missing the opportunity to connect with the beat. Think about all of the music you listen to. What would it be without a good beat? Especially consider pop music. The songs that show up in the Top 40 usually have a moderate tempo.
It Strengthens your Fingers
Play with a Metronome
The metronome is one of the best tools a musician can own. Nowadays you can get one for free on a smart phone or tablet. I definitely recommend getting a simple digital metronome because they don’t have Facebook. (Using apps for practicing can be great, but smart phones are practice session killers. I say this from an enormous amount of experience.)
Many guitarists associate playing with a metronome to building up speed. I find one of the best uses of the metronome is to make sure you don’t build speed. When you are learning a song on the guitar, especially as a beginner, set your metronome at a low tempo so you don’t have the urge to play any faster. Is playing along with the metronome very difficult? Work with it a little every day, when you have the ability to play along with the metronome you will have achieved a new level of mastery.
Metronomes are great for building your skills on the guitar. For more advice on building your skills, please check out my blog post on this topic!