Wonderful★Opportunity! vol.04 (ワン★オポ！vol.04)

"ワン★オポ！vol.04" is Wonderful☆Opportunity's album, with the previous being ワン★オポ！vol.03. It consist of 10 songs, both new and old. It was first distributed in VOC@LOID MASTER 15, and is available in Toranoana.

A crossfade of the album can be heard here