Another thing you will find in all modern music styles is the use of altered chords. The flattening or raising of 3rds and 7ths is common in basic chord construction, but the other degrees of a chord may also be raised or lowered. The most common altered chords involve alterations to the 5th and/or the 9th. Usually the alteration appears in the name of the chord. Some examples are given here.
This example demonstrates the 7#9 chord, which is one of the most common altered chords. Only the essential notes are played by the right hand.
The 5th can also be flattened or sharpened in extended chords. This example uses three altered chords - D7b5 , E7b9 and E7#9.
Here’s one featuring the 13#11 chord. For a more in-depth study of altered chords, and extended chords in general, see Progressive Complete Learn to Play Jazz Keyboard Manual.