Whois & Analysis for basicmusictheory.com

In music theory, the circle of fifths (or circle of fourths) is the relationship among the 12 tones of the chromatic scale, their corresponding key signatures, and the associated major and minor keys.

More specifically, it is a geometrical representation of relationships among the 12 pitch classes of the chromatic scale in pitch class space.

MIDI (short for Musical Instrument Digital Interface) is a technical standard that describes a protocol, digital interface and connectors and allows a wide variety of electronic musical instruments, computers and other related devices to connect and communicate with one another.

A single MIDI link can carry up to sixteen channels of information, each of which can be routed to a separate device.

Music theory is the study of the practices and possibilities of music.

"The term is used in three main ways in music, though all three are interrelated.

The first is what is otherwise called 'rudiments', currently taught as the elements of notation, of key signatures, of time signatures, of rhythmic notation, and so on.

Theory in this sense is treated as the necessary preliminary to the study of harmony, counterpoint, and form.

The second is the study of writings about music from ancient times onwards.

[...] The third is an area of current musicological study that seeks to define processes and general principles in music — a sphere of research that can be distinguished from analysis in that it takes as its starting-point not the individual work or performance but the fundamental materials from which it is built.".

MPEG-1 and/or MPEG-2 Audio Layer III, more commonly referred to as MP3 (or mp3), is an audio coding format for digital audio which uses a form of lossy data compression, which are data encoding methods that use inexact approximations and partial data discarding to reduce file sizes significantly, typically by a factor of 10, in comparison with a CD, yet still sound like the original uncompressed audio to most listeners.

Compared to CD quality digital audio, MP3 compression commonly achieves 75 to 95% reduction in size.

MP3 files are thus 1/4 to 1/20 the size of the original digital audio stream.

This is important for both transmission and storage concerns.

The basis for such comparison is the CD digital audio format which requires 1411200 bit/s.

A commonly used MP3 encoding setting is CBR 128 kbit/s resulting in file size 1/11 (=9% or 91% compression) of the original CD-quality file.

A clef (from French: "key") is a musical symbol used to indicate the pitch of written notes.

Placed on one of the lines at the beginning of the stave, it indicates the name and pitch of the notes on that line.

This line serves as a reference point by which the names of the notes on any other line or space of the stave may be determined.

Only one clef that references a note in a space rather than on a line has ever been used.