This play along jamtrack features a string quartet without drums. To give you a feel for the tempo, a vocal count in of 1 2 3 4 has been added in the beginning. Start playing the chord for string 1234 after the count in and you will be able to play the entire progression as demonstrated in the video. The notation at the top of the page is taken from the Jamtracks PDF and shows the violin part. Its melody arpeggiates the different major, minor, minor 7th, dominant7 and major 7th chords by altering the key notes with accidentals.