"Tenkyou no Wagaku (天響ノ和樂)" is a compilation album by Yamaha Music Communications. It contains 15 tracks, both old and newly written, made by various VOCALOID producers.
A crossfade of the album can be heard on YouTube.
The official album website is available on vocaloidrecords.com.
The album is purchasable on Amazon, CDJapan, Toranoana, Animate, WonderGOO and GAMERS.