Moonbin & Sanha () was the first official sub-unit of South Korean boy band Astro. Formed by Fantagio in 2020, the group was composed of two Astro members: Moonbin and Yoon San-ha. Their debut extended play, In-Out was released on September 14, 2020.
Career Pre-debut On August 21, 2020, Fantagio Music released an image teaser with a logo and a date confirming that Moonbin and Sanha would form a sub-unit and release an EP in the next month. Before debut, both Moonbin and Sanha co-hosted the music show Show Champion since March 2020 along with Verivery's Kangmin. In a press Q&A, Moonbin and Sanha stated that their chemistry while co-hosting inspired them to form a sub-unit.
2020–2023: Debut with In-Out, Refuge, and disbandment On September 14, 2020, Moonbin & Sanha officially debuted with the EP In-Out and its title track, "Bad Idea". A week later, on September 22, they gained their first music show trophy with the single on SBS MTV The Show. A week after its release, In-Out debuted at number 9 on the weekly overseas album chart of Oricon and at number 2 on the weekly album chart of Gaon.
On February 11, 2022, Moonbin & Sanha released the pre-release single "Ghost Town", before the release of their second EP Refuge on March 15, featuring the title track "Who".
On December 3, 2022, Fantagio announced that Moonbin & Sanha would make a comeback on January 4, 2023, and scheduled to return with their third EP Incense.
Moonbin died on April 19, 2023, thus resulting in the sub-unit's disbandment. On April 27, Fantagio confirmed the unit's Weverse community would be shut down on April 30, nearly 2 weeks after its initial creation.
Discography Extended plays Title Details Peak chart positions Sales KOR In-Out: Refuge: Incense: JPNPeak positions on Oricon Album Chart: In-Out: Refuge: Incense: In-Out Released: September 14, 2020 Label: Fantagio Formats: CD, digital download, streaming 2 9 KOR: 72,414 JPN: 14,382Oricon cumulative sales for In-Out:
Refuge Released: March 15, 2022 Label: Fantagio Formats: CD, digital download, streaming 4 11 KOR: 147,530 JPN: 10,325 Incense Released: January 4, 2023 Label: Fantagio Formats: CD, digital download, streaming 5 2 KOR: 143,582 JPN: 14,081
Singles Title Year Peak chart position Album KOR "Bad Idea": "Who": "Madness": "Bad Idea" 2020 191 In-Out "Ghost Town" 2022 — Refuge "Who" 29 "Madness" 2023 90 Incense "—" denotes a recording that did not chart or was not released in that territory
Other charted songs Title Year Peak chart position Album KOR "Perfumer" 2023 — Incense "Desire" () — "Wish" () — "Chup Chup" — "Your Day" — "—" denotes a recording that did not chart or was not released in that territory
Fan-con tours DIFFUSION (2023)
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