Singer Sonnet Son has made it into the final top 7 for the best cover contest for the song, "Let It Go."

On April 5, Ryan Seacrest's website revealed the top 7 finalists for the cover of, "Let It Go."

On the list, Sonnet Son was listed as one of the final top 7 and proved her skill and popularity.

Son's cover video was a huge hit on YouTube and was then chosen as one of the 25 contestants for this cover contest.

She continued to pass the first round, second round and semi-final and make it into the finals.

The last online poll is currently taking place and the final winner will be revealed on April 11.

On the other hand, Sonnet Son released a new song on April 1 and will release her second mini album at the end of this month.

She recently appeared in KBS Cool FM's "Lee Sora's Gayo Park", and discussed how she sang "Let It Go," and confessed that she sang the song in a practice room without a microphone, just after returning from the United States.

She also sang "Let It Go" on the spot for this program.

Figure skater Kim Yuna also took part in this cover, and she is also seen with a children's choir participating in the recording process.