It's Week 5 of the Summer of Flatts! Today we dig into Rascal Flatts' lost-and-found box to bring you two lost demos, plus an old favorite recorded live in concert and a remix of a hit ballad.

The Boot has teamed up with the superstar trio to preview four rare recordings every Monday, which can then be purchased through their iTunes Pass every Tuesday, through Sept. 1. Twenty-eight songs total will be released through the Summer of Flatts promotion, including live concert recordings, studio sessions and unreleased demos.

Today's tracks are 'Here Comes Goodbye' (AC Remix), 'Love Another Day' (Lost Demo), 'I Can Almost' (Lost Demo), and 'Life is a Highway' (Live in Concert). Listen to the songs below, then visit iTunes to get your Summer of Flatts started. It's not too late -- if you purchase the pass now, you can get the past four week's songs right away.

Listen to 'Here Comes Goodbye' (AC Remix)

Listen to 'Love Another Day' (Lost Demo)

Listen to 'I Can Almost' (Lost Demo)

Listen to 'Life Is a Highway' (Live in Concert from Nissan Live Sets)