He played cricket for over a decade as a fast bowler, but suffered a severe elbow injury, forcing him to give up the game in 2007. He was also part of the 2004 Under-19 Cricket World Cup Indian squad. He shifted his focus from sports to singing, took vocal training for eighteen months and performed his first album "This is Harrdy Sandhu" in 2011 composed by V. Grooves . He released the video of song "Tequilla Shot" from album but the song and album didn't perform so well . He has disappointed and decided to leave singing if his next single track would not performs well .
He met lyricist Jaani and Music Director B Praak to made the song named "Soch" which was released in 2013 . The song become huge hit and it changed the life of Sandhu and the full team associated with the song. The song was one of biggest hit of the that year and it is highly loved by audience till date .
He made his debut as actor with movie "Yaaran Da Katchup" in 2014. The movie proved to be a Average movie . But he kept going as singer with tracks such as "Joker","Backbone", "Horn Blow","Yaar Ni Milya" with Jaani And B Praak in later years that proved to be a big hits .
Later in 2017 he released track "Naah" featuring Nora Fatehi in it with lyrics by Jaani and Music by B Praak . The track proved to be a big hit across the nation .In 2018 after huge sucess of Naah he released "Kya Baat Ay" with the same team . This song also proved to be huge hit . With the songs Naah and Kya Baat Ay , Harrdy become a Natinal level superstar . Both songs has crossed 500+ million views on YouTube individually .