• Derek Hough from ABC's "Dancing With the Stars" jumps backstage with his award for Outstanding Choreography at the 65th Primetime Emmy Awards in Los Angeles September 22, 2013.

Derek Hough from ABC's "Dancing With the Stars" jumps backstage with his award for Outstanding Choreography at the 65th Primetime Emmy Awards in Los Angeles September 22, 2013. (Photo : REUTERS)

'Dancing With The Stars' (DWTS) Season 20 (2015) Semifinals (Week 9) Recap, Spoilers: Final 4 Performed-- Riker Lynch And Nastia Liukin Topped The Leader Board

"Dancing With the Stars" (DWTS) Season 20 (2015) Week 9 featured performances by top 4 pairs of the show. The remaining contestants participated in two rounds of competition performing array of dances including Viennese Waltz, Contemporary, Quickstep, Paso Doble and more. Meanwhile, Bruno Tonioli, Carrie Ann Inaba, Len Goodman and Julianne Hough trained the contestants for the performance of Judges' choice round. Here is a recap of "Dancing With the Stars" (DWTS) Season 20 (2015) Semifinals (Week 9). [Spoiler alert!]

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In Week 9 of the competition, top 4 couples, including Noah Galloway and Sharna Burgess, Rumer Willis and Valentin Chemerkovskiy, Riker Lynch and Allison Holker, and Nastia Liukin and Derek Hough performed an unlearned dance and judges' choice that was choreographed by the judges.  

"Dancing With the Stars" (DWTS) Season 20 (2015) Semifinals opened with a dance choreographed by Mandy Moore. The competition kicked off with a performance by semifinalist Rumer Willis and Val Chmerkovskiy. The couple performed Viennese Waltz to the tune of "Earned it" by The Weekend.
Scores: Carrie Ann Inaba: 10 Len Goodman: 9 Julianne Hough: 9 Bruno Tonioli: 10

Total Score: 38/40

Next up were Noah Galloway and Sharna Burgess. They did Viennese Waltz to the tune of "The Time of My Life" by David Cook.

Score: Carrie Ann: 9 Len: 9 Julianne: 9 Bruno: 9

Total Score: 36/40

Riker and Allison took the stage to score the first perfect 40 of the night. They did a Contemporary routine to the music of "Work Song" by Hozier.

Score: Carrie Ann: 10 Len: 10 Julianne: 10 Bruno: 10

Total Score: 40/40

Nastia and Sasha, who replaced Derek, performed Quickstep and scored the perfect 40. They performed to the music of "Feelin' Good" by Christina Grimmie.

Score: Carrie Ann: 10 Len: 10 Julianne: 10 Bruno: 10

Total Score: 40/40

It was followed by Round Two of "Dancing With the Stars" (DWTS) Season 20 (2015) Semifinals (Week 9). The couples delivered a performance chosen and choreographed by the judges.

Rumer and Val took the stage to perform the routine choreographed by Bruno Tonioli. They performed to the tune of the theme of "Swan Lake."

Score: Carrie Ann: 10 Len: 10 Julianne: 10

Total Score: 30/30

Noah and Sharna were trained by Carrie Ann Inaba. They performed Paso Doble to the tune of "Unstoppable" by E.S. Posthumus.

Score: Len: 10 Julianne: 10 Bruno: 10

Total Score: 30/30

Riker and Allison did Argentine Tango choreographed by Julianne Hough. They performed to the tune of "Fur Elise" by Ludwig van Beethoven.

Score: Carrie Ann: 10 Len: 10 Bruno: 10

Total Score: 30/30

The last performer of "Dancing With the Stars" (DWTS) Season 20 (2015) Semifinals were Nastia and Sasha. They did Viennese Waltz to the tune of "Fall For You" by Leela James. Their dance was styled by Len Goodman

Score: Carrie Ann: 10 Julianne: 10 Bruno: 10

Total Score: 30/30

The results for the semifinals round will be revealed on the episode airing Tuesday, May 12, 2015. "Dancing With the Stars" (DWTS) Season 20 (2015) airs Monday and Tuesday at 8:00 pm on ABC. Come back for more spoilers.