couple questions regarding interval
what is interval for?
practicing interval means listen to intervals and memorize the sound, anything else?
how should i practice interval?
Intervals are the distance from one note to another. The lesson I saw on this site for intervals wasn't very good so I reccomend getting a book on music theory.
Right, intervals are the distances between notes. In order, you have minor 2nd, major 2nd, minor 3rd, major 3rd, perfect 4th, perfect 5th, minor 6th, major 6th, minor 7th, major 7th, unison/octave. minor 2nd would be E and F (1 fret difference), and an octave would be E to E (12 fret difference), and everything in between :-)

The reason to practise them and memorise them is so that you can use that knowledge to work songs out by ear.

Chords are made up of intervals, although generally they're described using scale tones.

To practice them, I personally prefer to use a piano but guitar will work fine. Just play a note, then play another note. Get used to the sound and try to picture the interval in your head. Eventually, you might get to the stage where you hear a song and can picture it being played on a guitar before you even pick up a guitar.
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intervals are simply, what makes a melody

as leonard bernstein displayed once, a note by its self is not music, but when notes come together is when they start forming a melody.

now this can be from either chords or a simple line of notes.
to practice an interval i suggest first listening to all major intervals [of the major scale]

for example: Do to Re or C to D is a major second, the first note counts as a first

once you've done that practice also the minors like a minor second would be C to Db
remember also that C to C# would not be considered a minor second because even if C# is enharmonically the same as Db the second scale degree of C is not another C

and apply your abilities to hearing intervals between chords of two notes and three and going on and on

if you have a piano [and know the keys] practice hearing intervals two at a time and together

i hope this has helped, its my very brief introduction to intervals, i'm taking a music theory class in high school and its helped me greatly, you could also go to your local bookstore or barnes and noble and pick up a book on music theory!

edit: know the major scale and what makes a major scale! this will help you along the way [also minor!!]
Last edited by nivlarama at Feb 16, 2009,
All relevant points have been expressed above, although there is one thing I would like to stress. Intervals are what make up music, along with timing. Can you imagine a song with just one note? probably not. Can you imagine a song with no descernable pattern? probably not.
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theory states 1+1=2 sometimes in music 1+1=3.