There are several artists with this name:
1) Ado (born October 24, 2002) is a Japanese singer. In 2020, at the age of 17, she made her debut with the digital single titled Usseewa. The song peaked at number 1 on Billboard Japan Hot 100, Oricon Digital Singles Chart, Oricon Streaming Chart, and Spotify Viral 50 Japan. The music video of the song on her YouTube channel reached 100 million views in 148 days after its release. Reaching 100 million plays on Billboard Japan after 17 weeks from charting-in was the sixth fastest in history and the youngest for a solo singer.
In the Summer of 2022, She played a major role in a movie for the popular anime "One Piece" as she released an album dedicated to the movie. The Album was a big success and appeared everywhere on domestic musical charts and broke numerous records throughout the process. Notably, every song in the album all individually placed very highly on every Japanese musical chart including Spotify, Billboard and Apple Music. the very latter of which saw her have seven songs take up the top seven spots on August 14th. Impressively, she is the only Japanese Artist in history to occupy all the top 5 spots on a musical chart with songs from the same album.
2) Adolfo Makuntima Makwiza (aka Ado and Ado Makuntima) contributed to the African music scene in Toronto for over ten years. In fact, he was the first African-Canadian to found an African musical group there. Although he admitted that it's challenging to live as an artist in Canada, he had won support across the country, mostly from African music lovers seeking another opportunity to put on their dancing shoes.
Despite social, political and economic difficulties in the Democratic Republic of Congo, dance and celebration are central to emotional expression. Thus, it comes as no surprise that Ado knew how to enjoy life and that his music is a reflection of it. The hip-swinging rhythms and electrifying guitar of African rumba and Soukous define his classic Congolese style.
He died on Dec 29th, 2017 of a heart attack.
3) A Chinese rock group consisting of members of the University of Beijing, their album "I Say What I Mean" 我不能隨便說 was re-released in 1996.
4) Adnan Covic Ado, a singer from Bosnia and Herzegovina.