Summer by myself (Piano Ver.) (나 혼자 여름 (Summer by myself) (Piano Ver.))
"Summer by Myself (Piano Ver.)" ("나 혼자 여름 (Piano Ver.)") is the seventh digital single by Brave Girls. It was released on July 9, 2021 as a surprise gift for their fans. It is a piano version of the song of the same name from their fifth mini album Summer Queen.