Complex sentence: The title refers to the album's 10 songs taken from the six albums Bad Company had recorded, though the album would more aptly be called "10 from 5" since no songs from "Burnin' Sky" appear in the album.
Split into simpler sentences: The title refers to the album's 10 songs taken from the six albums Bad Company had recorded. Ironically, the album would more aptly be called "10 from 5" since no songs from "Burnin' Sky" appear in the album.