LOEN Entertainment responded on the 26th, "We are releasing our official response after reviewing the opinions of 'The Red Shoes' composer Lee Min Soo and other music experts. A portion of the melody for 'Here's Us' and the melody of the second measure [B part] in 'The Red Shoes' sound similar but the chord progression of the two songs are totally different."
"'The Red Shoes' uses a B-flat minor scale chord progression with a B-flat minor-bm7-cm7-cm6-f7sus4-f7 but 'Here's Us' uses a dominant scale chord progression of B-flat major. Also, the chorus and first measure [A part], the song's latter-half bridge part, as well as the overall melody, composition, and instrumental arrangement reveal it to be a totally different song."
The agency also assured fans that IU will continue with her activities as planned, stating, "[IU] is currently preparing for her upcoming solo concert to be held at the end of November and her Japanese promotions to be carried out at the end of the year. She is also carrying out her filming schedule for her drama, 'Pretty Man', as originally scheduled."
Source: OSEN via Nate