Only one

"Only One" is a song by American rock band Yellowcard. It was released in 2003 as a single from their album "Ocean Avenue". The song is written in the key of D major and falls under the pop punk genre. It was composed by the band's members Ryan Key, Peter Mosely, Ben Harper, Longineu W. Parsons, and Sean Mackin. Notably, "Only One" became one of Yellowcard's most well-known and commercially successful songs, reaching high positions on various music charts. The melody of the song features a catchy and energetic guitar riff accompanied by strong drum beats, giving it an upbeat and anthemic feel."