Instead of writing a sharp sign before every F note on the staff, it is easier to write just one sharp sign after each clef. This means that all the F notes on the staff are played as F#, even though there is no sharp sign written before them.
This is called a key signature.
The C major scale contains no sharps or flats, therefore the key signature for the key of C major contains no sharps or flats.
The G major scale contains one sharp, F#, therefore the key signature for the key of G major contains one sharp, F#.
The most common chords in the key of G major are;
G Am Bm C D7 Em
The following songs "All Through the Night" and "Lavender’s Blue" are in the key of G major.
The key signature tells you that all F notes on the music are played as F sharp (F#).
These songs contain all the common chords in the key of G major.
Many Blues and Jazz players favor hollow body electric guitars for their full, rich tone. One of the most famous hollow body electrics is the Gibson 335. It has been used by players like Freddy King, Magic Sam and Larry Carlton. BB King had a model called the 345 specially designed for him. His guitar is named Lucille.
Along with the Fender Stratocaster, the Gibson Les Paul is one of the most famous of all electric guitars. It is great for heavy Rock sounds as well as being versatile enough for Blues and Jazz. This guitar was made specially for Les Paul - a great Jazz player who also invented multi-track recording. This technique is essential for recording and is now used by everyone from top recording studios to musicians using computers at home.