T.I., B.o.B, Kendrick Lamar & Kris Stephens’ ‘Memories Back Then’ leaked a few months ago and then surfaced in CDQ version in January. The original version of the track sampled Gotye’s #1, Grammy-winning ‘Somebody That I Used to Know’ which was obviously very difficult to clear so here’s the re-worked product. The melody remains the same but the arrangement is entirely new. The music video is set to drop later today.