Last month, Sayaka Sasaki released her debut album entitled sympathetic world (LACA-15174) on the Lantis record label in Japan:

As a special bonus, and presumably due to the convenience of residing on the same record label, a bonus cover version of the second Dragon Ball Z TV series ending theme (“Boku-tachi wa Tenshi Datta” / “We Were Angels”) is included featuring backing vocals from original performer Hironobu Kageyama himself.

The album is currently available for just under $40 on CDJapan or ¥3000 on Amazon Japan. The song can also be purchased individually for ¥200 via the Japanese iTunes Store, though it will require a Japanese credit or gift card.