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| Play Guitar : Electric Guitar Amps | |
Electric guitars do not produce any audible sounds, they have electro-magnetic "Pickups" that (or this, or whatever) convert the vibration of the strings into an electrical signal. The electric guitar is plugged into an Amplifier (Amp), which produces sounds from the vibration signal it receives. All electric guitars require an amp or other electric amplification device. Acoustic-electric guitars, however, do make audible sounds - as they are essentially acoustic guitars with a built in pickup microphone. You can plug an acoustic-electric guitar to an amp to increase the volume, or to use guitar effects with it. giutar amps are rated in Watts, which is the amount of power they draw. The amount of power is directly proportional to the volume level a guittar amp is capable of; the higher the wattage, the louder the amp. For home use a 10 or 20 Watt amp should be sufficient. Concert halls use multiple 1000+ Watt amps, but they are huge spaces. Guitar amps have a speaker in the casing; and amps with higher power ratings have larger speakers, which increases the overall size of the amp case. You may have noticed huge stacks of speakers behind your favorite rock guitarist (see picture above).
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The original guitar amps (and all electronic devices of that day) used Vacuum Tubes, which were the precursors to our modern day miniature transistor. Vacuum tubes were delicate (they were made of glass) and prone to overheating. Today, most guitar amps are "solid state" - using transistors and other silicon chip technology that maybe is sturdy and uses less power. However, the sound quality from a tube amp is far superior to modern solid state amps - so tube amps are still available. Today's tube amps tend to be more expensive, and cost more to maintain (in replacing burnt out vacuum tubes) - they are usually the choice of professional musicians. For home and hobby use, cheaper solid state guitar amps are just fine. 
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Several types of guitar amps are available today, and come with many features and effects built-in. Volume and tone controls, of course, are standard - that is how you control the amount and tone of sound. The Reverb effect is available in many guitar amps, this simple and elegant effect provides a warmth to guitar music. Another effect that is commonly available in guitar amps is the Distortion effect. Using Pre and Post Gain controls, guitarists can alter the sound of their guitar - from a flat "thunk" to a screeching "wail". If you are lucky enough to have a spouse that also plays guitar, some amps have Dual input jacks - so both of you can play together. For the opposite case, where the spouse keeps yelling at you to TURN THAT DARN THING DOWN, some amps have a Headphone jack - so you can plug in and tune out. Can you dig it? I knew that you could. And for those play-along guitarists, some amps have a CD Input jack - so you can plug your CD player in and play along with your favorite music. Guitar Effects<<<Previous Next>>>Guitar Care 
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| Play Guitar : Read Guitar Sheet Music | |
Music notation is standard for all music instruments, including the guitar. While reading Guitar Tab is easier for beginners, for advanced music you must know how to also read sheet music. The symbol on the left is the Treble Clef, and identifies the document as sheet music. Note that piano (and bass guitar) music also uses the Bass Clef which we are not going to cover here. The Treble Clef is often followed by two numbers, in this case they are 4 over 4. This is the Time Signature for this music, the simple explanation is the top number indicates the number of beats per measure, and the lower number indicates that quarter notes (one-fourth, explained below) are used to mark each beat. This 4 over 4 time signature is used very often, in fact it is also called Common Time and may be indicated by a large C which means the same thing as 4 over 4.
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The music notes are written on Ledger Lines (the horizontal lines), and the music is broken up into chunks called Measures. Each measure in turn is broken up into Beats, in the above example Common Time (4/4) is used, there are 4 beats per measure. Each ledger line and space (between lines) indicate different music notes as shown above (marked in red on the left side). Music notes are written ON a line, or BETWEEN lines (in the spaces). The lowest ledger line is the E, the space following it is the F, the line following it is the G, and so on. You can keep drawing ledger lines above and below the existing lines, if your music has higher or lower Octaves. The first measure in the above example has a Whole Note symbol (hollow circle O). In this case, it is sitting on the E line, so it is a whole E note. Whole notes last for the duration of the measure, in this case 4 beats. In other words, play the note and HOLD IT for 4 beats (don't pick it four times). The next measure shows the Half Note symbol, which is the hollow cirle (O) with a stem. Note the stem can go either up or down, whichever is more convenient depending on its position on the lines. The Half Note takes half as many beats as the whole note, in this case it would half of 4, which is 2 beats. Thus we have two half notes in the second measure, each of which takes 2 beats each (totalling 4 beats, the length of the measure). Again, you have to HOLD the half note for two beats (don't pick the note twice), then pick it and hold it for the next 2 beats. The two dots at the start of measure 1, and at the end of measure 2, indicate Repeat. This means you would repeat that section when playing this piece of music.
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The above example shows the Quarter Note symbol in measure 3, which is a filled in circle with a stem. The quarter note is one-quarter of the whole note, which in this case is 4 divided by 4 = 1 beat. Remember the 4/4 Time Signature that has the lower 4, indicating a quarter note marks each beat. Therefore we have four quarter notes in measure 3 that provide four beats. The stem again, can go up or down, whichever direction is more convenient or readable. Now we have the quarter note providing each beat, but we can jam in TWO notes for each beat. This is the Eighth Note (which is one half of the quarter note) which is symbolized with a filled in circle with a stem and a tail that curls. In music we count "one AND two AND three AND four AND" to accommodate the quarter notes. In measure 4 above, beat 1 has two quarter notes (ONE AND shown as 1 +). Beat 2 also has a pair of quarter notes, these have been drawn with a line joining their stems - this format is more readable and is often used when more than one quarter note is written together. Beat 3 introduces a new concept in music, the Rest (or SILENCE) - with a pair of Eighth Rests, indicating that no notes are to be played for that beat (3 +). Beat 4 has a Quarter Rest, which is functionally identical to the pair of eighth rests we just saw in beat 3.
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Sharps and flats are also written on sheet music, either next to each note or after the time signature as a Key Signature. That is an advanced level of information which is best learned from a formal guitar teacher and is not being covered here. The basic sheet music reading tutorial above should be sufficient to get you started. The previous Guitar Tab section is easier for beginners to play almost any piece of guitar music, and Advanced Guitar Techniques is next to show you how to get even more sounds out of your guitar. Guitar Tabs<<<Previous Next>>>Advanced Guitar Techniques 
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Additional pages about Electric Guitar Amps
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