"Yojo's counterattack" is a compilation album by yojomaestro. It is their 10th album. It contains 9 tracks sung by Hatsune Miku and various Utaites. It was first released at the M3 event.
The official album website is available here. A crossfade of the album can be heard there as well.
Note: Only track 1 is sung by a VOCALOIDs. Tracks 2, 4, 6, 7 and 9 are sung by Utaites. Tracks 3, 5 and 8 are instrumental.