"Happy" is a song recorded by South Korean singer Taeyeon, released as a digital single originally on March 9, 2020[1] but postponed to May 4, 2020, by SM Entertainment.[2][3] It is a pop song that reinterprets old schooldoo-wop and R&B with a modern sound, being described as a special gift for fans with lyrics about emotion and happiness found in the time spent with loved ones.[4] The song was later included in the CD & LP version of Taeyeon's fourth EPWhat Do I Call You as bonus track.[5]
On March 3, 2020, a teaser photo with the title of the single was revealed on Taeyeon's official website.[6][7][8] Hours later it was revealed that the release of the single would take place on March 9 in celebration of her birthday.[9]
The music video for "Happy" was released on May 4, 2020.[10] Taeyeon later filmed a live summer performance of the song, which was released on June 26.[11]
On March 9, 2020, the day of the song's planned release, the singer intended to commemorate it with a broadcast on V Live;[12][13] however, SM Entertainment released an official statement[14] saying that the song's release would be postponed until further notice and the subsequent broadcast cancelled due to Taeyeon's father's death on the same day.[15][1][16] On April 27, 2020, SM Entertainment announced that the song would be released on May 4.[2][3] On April 29, 2020, it was announced that the singer would be broadcasting live on V Live on the day of the song's release, as previously planned.[17]
Upon release, "Happy" topped all of South Korea's major realtime charts except Flo.[18] It also topped iTunes Top Song Charts in 15 regions and rose to the top of the Korean music video chart of QQ Music.[19][20]
It debuted at number 9 on the Billboard World Digital Songs chart with 1,000 downloads sold, becoming her 15th Top 10 entry on the chart.[21][22] The song also debuted at number four on South Korea's Gaon Digital Chart for the chart issue dated May 3–9, 2020, becoming Taeyeon's 22nd top-ten entry in the country.[21]
