All these 10 songs included in Record FEEDBACK are ancient Zen poems and Gathas, but Xiao He perfered to call this record the Songbook, which is only a part of the Echoes Actions. Echoes Actions can be generated in various art forms and multimedia changes. Introducing the record FEEDBACK, XiaoHe said that, "I've loved the word 'FEEDBACK' for a long time because it's close to the unspeakable 'Real Way'......Those Zen poems and Gathas that can date back as far as 389 B.C. touched one himself firstly, then chanted constantly after Buddhism morning class, and developed into songs with the passing of time. These songs are not 100% original, but they are unique to me......" Most of these songs can't search out their sources and their stories of being passed down through centuries. However, they were still spreaded up to now vividly.