Between 1983's disappointing Flick of the Switch and 1985's abysmal Fly on the Wall, AC/DC decided to release some of the unreleased material from the Bon Scott era. Even though '74 Jailbreak only has 5 tracks, it still eclipses Flick of the Switch and Fly on the Wall in terms of quality. If you ask me, this EP is responsible for a good deal of the "Bon Scott is way better than Brian Johnson" discussion.
Anyway, all 5 songs on this EP are great, especially the classic "Soul Stripper" and the look inside the life of a rock star in "Show Business." '74 Jailbreak was a timely and necessary release in 1984, but it stands very well on its own today.