A clef (from French: clef "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.
There are three types of clef used in modern music notation: F, C, and G. Each type of clef assigns a different reference note to the line (and in rare cases, the space) on which it is placed.
Once one of these clefs has been placed on one of the lines of the stave, the other lines and spaces can be read in relation to it.
The use of three different clefs makes it possible to write music for all instruments and voices, even though they may have very different tessituras (that is, even though some sound much higher or lower than others). This would be difficult to do with only one clef, since the modern stave has only five lines, and the number of pitches that can be represented on the stave, even with ledger lines, is not nearly equal to the number of notes the orchestra can produce. The use of different clefs for various instruments and voices allows each part to be written comfortably on the stave with a minimum of ledger lines. To this end, the G-clef is used for high parts, the C-clef for middle parts, and the F-clef for low parts—with the notable exception of transposing parts, which are written at a different pitch than they sound, often even in a different octave.
Clef may refer to:
The Conference and Labs of the Evaluation Forum (formerly Cross-Language Evaluation Forum), or CLEF, is an organization promoting research in multilingual information access (currently focusing on European languages). Its specific functions are to maintain an underlying framework for testing information retrieval systems and to create repositories of data for researchers to use in developing comparable standards. The organization holds a forum meeting every September in Europe. Prior to each forum, participants receive a set of challenge tasks. The tasks are designed to test various aspects of information retrieval systems and encourage their development. Groups of researchers propose and organize campaigns to satisfy those tasks. The results are used as benchmarks for the state of the art in the specific areas.,
For example, the 2010 medical retrieval task focuses on retrieval of computed tomography, MRI, and radiographic images.
Your morning smile of torture
Holds me in its grip
You trace the taste of yesterday
The bruise upon my lip
You touch my eyes and hypnotize
And slip inside my heart
I wait for this forever
But we always fall apart
You want to hold me closer
And secretly entice
You take the size of shadowed men
And punish me with kisses every night
This espionage is sweeter now
Now that we're alone
But I meet your eyes and then despise
All we call our own
I write my name in lipstick
On the mirror as I leave
To stay would be too dangerous
To break the make-believe
You want to hold me closer
And secretly entice
You take the size of shadowed men