This additional disc includes seven notable collaborations and guest vocal performances, such as Sakai’s work with Barbier, TAK MATSUMOTO (B'z), and the supergroup ZYYG, REV, ZARD & WANDS. Technical Excellence and Mastering

These contain the A-sides and B-sides of all 45 singles released during the band's active years, arranged in chronological order from 1991 to 2011.

The box set is an expansive journey through ZARD’s career, featuring a total of spread across seven discs:

For audiophiles and long-time fans, the version of this collection is the gold standard, preserving the nuances of Sakai’s emotive vocals and the meticulous production of the 90s Being sound in full lossless quality . A Comprehensive Collection