What are the notes for how could this happen to you by simple plan on alto sax?

To play "How Could This Happen to Me" by Simple Plan on Alto Saxophone, you'll primarily use the notes from the concert pitch of the song. The main melody typically involves a combination of notes in the key of B major, such as B, C#, D#, E, F#, G#, and A#. You can find specific sheet music or tabs that provide the exact notes for the melody. Additionally, listening to the song can help you capture the nuances and phrasing.