Several singles from these albums became top ten hits on the pop charts throughout German-speaking Europe, including "Stardust" and "Wild & Free".

Beyond her music career, Meyer-Landrut has been featured as a coach on nine seasons of the reality competition television series The Voice Kids as well as an expert panel member for the Eurovision Song Contest on several occasions.

In addition, Meyer-Landrut has also voiced characters in audiobooks and animated films, including A Turtle's Tale (2010), Tarzan (2013), Trolls (2016), and Wonder Park (2019), and has been a brand ambassador for L'Oréal hair coloring and skin care products.

[4] She is the granddaughter of Andreas Meyer-Landrut, the Baltic German-born West German ambassador to the Soviet Union in Moscow from 1980 to 1983 and 1987 to 1989,[5][6] and Hanna Karatsony von Hodos who was born in Bratislava, Slovakia of Hungarian nobility.

[8] Meyer-Landrut grew fond of singing and appeared as an extra in several German television series,[5] though she never received any formal acting or vocal training.

[10] Meyer-Landrut decided to take part in the talent show Unser Star für Oslo, a newly created national television programme to select the German entry for the Eurovision Song Contest 2010.

[9] The show was organised by public broadcaster ARD and private television station ProSieben, as well as entertainer, music producer and former Eurovision entrant Stefan Raab.

"[6] After her first appearance, performing "My Same" by British singer Adele, Meyer-Landrut received much praise from the show's jury panel and was instantly considered the favourite.

[11] Meyer-Landrut reached the final of Unser Star für Oslo, mainly performing lesser-known songs by international artists The Bird and the Bee, Kate Nash, Paolo Nutini and Lisa Mitchell.

Through televoting the audience chose "Satellite", written by American Julie Frost and Dane John Gordon, to be her designated song in the event she won the show.

[17] One day after winning Unser Star für Oslo, her three songs from the finals topped the German iTunes Store sales chart,[18] making her the first singer to accomplish this.

Germany received a wild card during the running order draw, allowing the German representatives to choose the country's position for the final.

Bookmakers regarded her as the second favourite behind Azerbaijan's Safura, while Google projected she would win based on search volume in the participating countries.

[35] The BBC called "Satellite" the first "contemporary pop hit Eurovision has produced in decades," ushering in "a new era for the annual music jamboree".

[36] Meyer-Landrut's victory received much attention in Germany and the show was seen by 15 million viewers on German television (a 49.1 percent market share).

[38] In June, "Satellite" regained the top spot on the German singles chart for one week and also peaked at number one in Denmark,[39] Finland,[40] Norway,[41] Sweden[42] and Switzerland.

[44][45] In June 2010 in the German dubbed version of the animated film Sammy's Adventures: The Secret Passage, Meyer-Landrut provided the voice for the character originally spoken by Isabelle Fuhrman.

Meyer-Landrut, Marija, Dima and Alexander performed their winning song entries accompanied by traditional Azeri instruments, and were joined by Ell & Nikki for a rendition of "Waterloo".

[53] In late July and early August she went on a promotion tour called Lenas Wohnzimmer, which took her to Munich, Cologne, Hamburg and Berlin.

[54] Since October 2012 she has performed the theme song in the opening credits of Sesamstraße, the German version of Sesame Street accompanied by Elmo on trumpet.

[55] Also that year, Meyer-Landrut covered the Pippi Longstocking song "Sjörövar Fabbe" ("Seeräuber-Opa Fabian") for the compilation album Giraffenaffen in November 2012.

[64] Meyer-Landrut was president of the German jury, also including Carolin Niemczyk, Alina Süggeler, Tim Bendzko and Florian Silbereisen, and the spokesperson for Germany, revealing the countries voting results at the Eurovision Song Contest 2013 final on 18 May.

[70] From March to May 2014 Meyer-Landrut returned as coach for the second season of The Voice Kids along with Henning Wehland from Söhne Mannheims and Johannes Strate from Revolverheld.

Taking her sound further into the electro and dance pop genre, she worked with the English production and songwriting team Biffco, and the Berlin-based collective Beatgees on most of the album.

[74] From February to April 2015 Meyer-Landrut reprised her role as a coach on the third season of The Voice Kids along with singers Strate and Mark Forster.

[77] In September 2015, Meyer-Landrut released "Wild & Free", the theme song for the motion picture Fack ju Göhte 2 as a single.

[79] After taking a little break, in December 2016, Meyer-Landrut revealed on her Twitter account that her forthcoming fifth studio album would be called Gemini and that she had already begun working on it.

[88] In August 2017, Lena collaborated with the German hip hop group Genetikk on the song "Lang lebe die Gang".

In November 2018, Lena released "Thank You" as the lead single from her fifth studio album Only Love, L.[90] The song debuted and peaked at number 40 in Germany.