2008 debut and shinee world

On May 25, 2008, the group's first mini-album, Replay was released from label company, SM Entertainment. The mini-album debuted at #10 on the Korean music charts and peaked at #8, selling 17,957 copies in the first half of 2008.

Shinee released their first full-length album, The Shinee World, on August 28, 2008.The album debuted on the charts at #3, selling 30,000 copies. The first single released from the album was "Sanso Gateun Neo (Love Like Oxygen)", a cover of "Show the World" by Martin Hoberg Hedegaard,^[13] originally written by the Danish songwriting and production team of Thomas Troelsen,Remee and Lucas Secon. On September 18, 2008, Shinee's "Sanso Gateun Neo (Love Like Oxygen)" was the #1 song on M! Countdown. A few days later, Shinee received the "Mutizen" award for the same single on SBS's Popular Songs.