Deceptive Cadence is a chord progression where the dominant chord is followed by a chord other than the tonic chord (usually the sixth chord or superdominant chord or submediant chord (V-VI), but sometimes something else).
To create a deceptive cadence ending to a song, hold the last note (usually the 1st note of the scale associated with that Key). Then Play the Chords in this illustration link. Please download and print it out for your reference.
If fingering your own chords, play the chords in their 1st Inversion. NOTE: you must be in a Major Key - NO Minor Keys!
In the first example, the Key of C, you would normally play a C note and hold that note while playing the Chords of the
Deceptive Cadence. Play an A flat chord, a B flat chord and then a C chord, then release all at the same time. Makes for a GREAT ENDING on slower songs with a big finish!