Dear All,
I downloaded several music sheets for piano in which some tables are placed over note lines. These tables has 5x5 cells with several black and white circles. The tables are titled with G7+5, Cm, Ab7, G7 ....
What do these tables mean? How to read them and how to play them?
Thanks

It sounds like you are describing guitar tablature. To a guitarist who reads tabs the dots (circles) tell where to place the fingers, and the grid is a picture of the frets and strings.

Yep definately guitar tabs... I second what Joe said.

It's not tablature per se but rather chord diagrams, right? Guitar tab is numbers on a six-line version of staff paper. The diagrams are placed (usually) right above the piano sheet music, in lieu of just writing "G7" to mean a Dominant G chord it outlines the finger placement for a G7 shape on a guitar fretboard.

Tab is instead of regular notation, these chord diagrams are something simpler annotating the regular notation.

Yeah Brent, more of a diagram for the basic guitar chords. Although a good guitar player won't usually play just that simple chord inversion.

Most guitar players (and piano players too) just play off the chord symbols. Especially if it's pop music, the actual notation is usually "dumbed down" to the most basic notes, except intros, which ironically are usually pretty detailed.

Semantics, I suppose. My 1964 edition of the Harvard Dictionary of Music calls the guitar fret chord symbols "Modern Tablatures". I certainly concur that most real guitar players are going to go by the G+7 or the Dsus9 notation.

Ed

Keny,

If you are not already familiar with the construction of basic intervals and chords (triads), the scope of what you are asking is way more than what can be explained in a simple thread on this forum.

First of all, those graphics do not apply to piano. Maybe let us know your current level of understanding of music theory/harmony, and we can go from there.

Ed