Rock Band Rivals | Harmonix Music Systems, Inc.The full Rock Band 4 experience includes Rock Band 4 and the Rivals Expansion, giving you access to the full feature set of the best supported, most fully featured music game on the market today THE FULL ROCK BAND 4 EXPERIENCE includes Rock Band 4 and the Rivals Expansion, giving you access to the full feature set of the best supported, most fully featured music game on the market today INTRODUCIN
