This photo is taken from composer/arranger Takumi Masanori's blog :
秘密のレコーディング中！
乞うご期待^^
http://ameblo.jp/masanori-takumi/entry-11528485001.html
Just 2 lines Takumi wrote but long story short , he supervised DAIGO's recording (that was done in secret but it's not a secret anymore xD) & told everyone to stay tune with more details to follow .
And Takumi's music credits are quite something & judging from his
profile page on ameba , he has done work on quite a lot of artistes such as EXILE , AAA , ViViD & many more .
Including of DAIGO☆STARDUST so I guess he & DAIGO go way back like really way back :O
And if that's not enough , according to
http://www.animenewsnetwork.com , Takumi also had a hand in arranging/composing some songs for a few prominent animes , inclusive of Mobile Suit Gundam AGE , Yu-Gi-Oh! 5D's among others .
Guess this means Takumi will be the 1 supervising the release of DAIGO's upcoming single that will be released in mid July ? x)
Also Takumi was born in the same year as DAIGO but unlike DAIGO who was born in April , Takumi was born in Nov :p