On June 24, Nayeon officially released her new digital album 'ABCD' and its title track 'ABCD (Extended Version)'. The album included four tracks in total: the extended version of 'ABCD', the original version, and instrumental versions of both.

The 'ABCD (Extended Version)' included the dance break section featured in the music video of 'ABCD', the title track from her second mini-album 'NA', released on June 14. This track, with its rhythmic melody and beat, along with Nayeon's powerful performance in the music video, garnered enthusiastic responses from domestic and international viewers. 

The new version was expected to deliver the same intense energy.

The new song 'ABCD' is a pop dance track that combines hip-hop and modern elements, reminiscent of early 2000s pop divas. The song showcased Nayeon's charm from 'A to Z', with lyrics like "I'll teach you how to fall in love," making her the 'Summer Queen' to fall for this hot summer. 

Her new album 'NA' recently topped the Circle Chart's weekly album chart (June 9-15) and received attention from prominent international media such as Rolling Stone and Grammy.com.

Amid the heated response, Nayeon captivated fans with her 'hot girl' energy in the 'ABCD' music show performances. 
On the 19th and 21st, she won first place trophies on MBC M's 'Show! Champion' and KBS 2TV's 'Music Bank', respectively. Nayeon expressed her joy at fulfilling her wish to celebrate a first-place win with her fans, ONCE, which she couldn't do during her first solo activities.

Nayeon's new digital album 'ABCD' and its title track 'ABCD (Extended Version)', showcasing her 'one and only' charm, were available on various music sites starting at 6 PM on the 24th.