- Stefania is the youngest finalist this year, while Destiny is a few months older than her.
- Stefanis the first JESC participant for Greece, representing the country in ESC.
- Greece is the first-ever country using the Green Box technology on stage during a performance.
- Greece is the first-ever country to use the BLACK THEATRE OF PRAGUE idea for the dancers on stage.
- Iceland now joins Australia as the two countries ever use a backup video for their performance.
- Daði Freyr is the tallest singer this year in Eurovision with a height of 2m and 8 cm. The tallest man in the history of ESC is Igor Vovkovinskiy (2.34cm) for Ukraine in 2013.
- Iceland holds the record for 1,000 voices in the pre-recorded vocals.
- In that chorus, the German entrant, Jendrik (representing his country as well this year) is participating.
- After Portgual (1967, 2001) an Angolan artist (Benny Cristo) is representing a country in Eurovision 2021, the Czech Republic.
- Following the 4 participations of Valentina Monetta, now Senhit holds the runner up record of two participations in the contest.
- In this semi-final we had artists with origins from Greece (Albania), from Kosovo (Switzerland), from Angola (Benny Cristo), Eritrea (San Marino), Philippines (Austria) and a Russian/Belarusian,German,Turkish artist (Latvia).
- Following Ann-Louise Hanson with 14 efforts to go to Eurovision and Sanna Nielsen with 7, Samanta Tina is the next record holder with 6 efforts.
- We heard Danish lyrics for the first time since 1997.
- Unlike the first semi-final, all Balkan participating countries qualified (Greece, Moldova Serbia, Albania, Bulgaria).
- With two compositions this year and two productions, Dimitris Kontopoulos now has three songs in the final (Greece, Moldova as a composer, Albania as a producer), as Estonia eliminated.
