For 6th chords, the basic chord sound consists of chord tones 1, 3, and 6. To create effective piano voicing for various chord qualities, be sure to follow these guidelines:
Understanding the basics of piano voicing and the use of common tensions is a first step in creating effective orchestrations of reharmonized melodies. The following information on piano voicing is excerpted from the Berklee Press book Reharmonization Techniquesby Randy Felts.