41m is 40meterP's fourth album. It contains 11 tracks, sung mostly by Hatsune Miku, GUMI and IA. Utaites Chano and Shiho sing the last track, which is a remake cover of Futariboshi, originally sung by Miku and GUMI. 41m was first distributed at the doujinshi fair Comiket 86. A crossfade of the album can be seen on NicoNico and it is purchasable on Amazon.