'Dancing With the Stars' Preview: What to Expect From the 'Most Memorable Year' Episode

The ABC dance competition is bringing back its "Most Memorable Year" theme.

"Shark Tank's" Robert Herjavec will turn back the clock more than four decades -- to 1970, to be exact. He explained to ABC News, "It's the year my dad grabbed my mum and me and we crossed the border in communist country, Yugoslavia, got on a boat and came to North America, with one suitcase."

Riker Lynch, the "Glee" actor and R5 musician, will reflect on 2014, when, he said, his band "took off to the next level."

"We did a world tour," he said. "Our songs played on radio. We played festivals with Fall Out Boy and Paramore and Maroon 5 and Ed Sheeran. Just really, really awesome stuff."

One couple will be eliminated on Monday night's show, which begins at 8 p.m. Eastern time.

Here's a rundown of the songs to which the couples will dance on Monday night:

* Noah Galloway and Sharna Burgess: “American Soldier” by Toby Keith

* Riker Lynch and Allison Holker: “Shut Up and Dance” by Walk The Moon

* Suzanne Somers and Tony Dovolani: “Three’s Company Theme” by Dominik Hauser

* Chris Soules and Witney Carson: “The Book of Love” by Gavin James