Solo (stylized as SOLO) is the second Korean EP of South Korean singer Heo Young-saeng. It was released on May 22, 2012 under B2M Entertainment and distributed by LOEN Entertainment The album was later released in Taiwan on August 24, 2012 under Warner Music Taiwan.

After the release of his debut solo album Let It Go in May 2011, Heo turned to acting. He made his musical debut in The Three Musketeers in November 2011 and made his first drama appearance on KBS's daily sitcom I Need A Fairy (or Sent From Heaven) in February 2012. He also contributed to that drama's original soundtrack with the release of "Love Song".

In the midst of the sitcom, B2M Entertainment started announcing Heo's upcoming album release via Twitter. It announced his comeback with the tweet: "He is Back D-DAY 13", and another one stating: "120522 YS 2nd mini album [SOLO] release...R U Ready??", accompanied by a photo of Heo. Both tweets were posted on May 9. B2M continued updating fans by posting image teasers of Heo Young-saeng on Twitter. A 31-second music video teaser was then uploaded on YouTube on May 17, showing Heo dancing and accompanied by snippets of the song.

Heo's agency announced that Heo had participated in the planning, concept, and production for the upcoming EP. His personal friend Steven Lee, who worked with SS501 to create songs such as "Love Ya" and "Love Like This" for their albums, produced four out of the five songs on SOLO.

SOLO was officially released on May 22, 2012. The four-minute and nine-second music video of the title track, "Crying", was uploaded to YouTube the same day. Filming of the music video took place overseas, using a helicopter camera to shoot the wide panorama.

The medium-tempo pop and R&B song "Crying" was composed by Steven Lee, with lyrics by Heo. The song describes a man's undying love for his past lover despite their broken relationship. Heo mentioned that he liked to do light rock music, but he did not have the chance to include it in the album.

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Wikipedia