Neutral third 31-tet . Infants experiment with singing, and a few studies of individual infants' singing found that neutral thirds regularly arise in their improvisations. In two separate case studies of the progression and development of these improvisations, neutral thirds were found to arise in infants' songs after major and minor seconds and thirds, but before intervals smaller than a semitone and also before intervals as large as a perfect fourth or larger. The neutral third has been used by a number of modern composers, including Charles Ives, James Tenney, and Gayle Young. The equal-tempered neutral third may be found in the
Divided by Night "Play for Real". This song is only available on the pre-order for iTunes, and (according to The Crystal Method's Myspace blog) will not be released anywhere else. In late April, 2009, The Crystal Method put one song from "Divided by Night" onto their Myspace page, "Sine language", which features the upcoming hip hop duo, LMFAO. On the very same day that "Sine Language" was put on their Myspace page, The Crystal Method released the second single from "Divided by Night", the song, "Black Rainbows" (exclusively to Beatport) which features vocals from Stefanie King Warfield, wife of Justin Warfield, who also