Blue-Sky Research is Taproot's third major label album which was released on August 15, 2005 internationally and a day later in the United States. Smashing Pumpkins frontman Billy Corgan co-wrote three songs on the album. Jonah Matranga from Far and Onelinedrawing and Deftones guitarist Stephen Carpenter make guest appearances. The band wrote over 80 songs for the effort. "Calling" was released as the first single and was a moderate hit, while the second single, "Birthday", followed quietly.