The Who’s platinum-selling Top 5 hit ‘Quadrophenia’ arrived 50 years ago as the rock-opera successor to ‘Tommy,’ and somehow never left its shadow.

Led Zeppelin began experimenting with an entirely new palette of sounds 50 years ago this week with ‘Houses of the Holy.’

‘The Next Day’ found David Bowie making a surprise return 10 years ago this month, but without the old theatrics and an artsy agenda.

Issued 50 years ago this week, Deep Purple’s ‘Who Do We Think We Are?’ wasn’t as successful as ‘Machine Head.’ Yet its sturdy grace under pressure endures.

Here’s what we’ll be packing way in the back of our luggage – way, way in the back – before our fateful seafaring journey.

Mott the Hoople deserves wider fame for their eclectic mix of Dylan-esque folk rock, glam leanings, prog-type forays, proto punk/metal and rock ‘n’ roll.

‘Welcome to Zamrock! Vol. 1 and 2’ is proof positive that one can still be inspired by the music of the world, no matter who started it – or even who borrowed it.

Released 55 years ago, ‘Bees Gees’ 1st’ has since somehow disappeared from the public consciousness.

Well recorded, well played, straightforward yet intricate, ‘The Zealot Gene’ represents the best elements of the current Jethro Tull / Ian Anderson sound.

Last year’s releases from Bruce Springsteen, Deep Purple, R.E.M. and the Beatles taught us that what was once new is now old – and now new again.