Courtesy of Gamer, we now have our first look at Rockman Sound Box Vol. 2's cover art. This masterpiece sums up the product quite nicely: music from various Classic series side-games collected in one place. Battle & Chase, Rockboard, Soccer, and more!
Sound Box Vol. 2 boasts over 600 tracks across 10 discs (see the complete track list here). It will retail for 12,000 yen (roughly $110 USD), due out on December 17th, 2014.
UPDATE: 4Gamer has a more detailed tracklist. Symbols are used to denotate what's what...
Star = New as a first release on CD
Square = Extracted audio source
Circle = If it's been used from past CD release
Triangle = Digitally mastered from sound source
Thanks for the heads up, Nigoli!
Source: Gamer (via Heat Man)