Hyejin had full independance during her album. She got to write her own lyrics, produce it herself. She even helped choose the release date. On their instagram she put out a picture of her in all three songs she would release. Now fans had known about the solo album. They were just all waiting for the release date.

@SMTOWN

🎶

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Her single SOLO, which the music video will be released on February 16, will have two extra songs titled Gotta Go and BBIBBI. SOLO will represent her freedom from the rest of the members, who she spends 24 hours with every day. We do not have enough information on the other two songs, however here are some pictures