Sono Hitotsubu no Ōkina Namida ni wa

'Sono Hitotsubu no Ōkina Namida ni wa (その一粒の大きな涙には) is the song used in Machine Remix in Rhythm Heaven Megamix. The song was performed by Hikaru Ohashi, written and composed by Tsunku♂, and arranged by Itagaki Yusuke. The vocals were removed in the international version.

Commentary
The following is commentary given on the Tsunku♂ Official Blog.