SF9’s Inseong Unleashes His True Voice: ‘Mute is Off’ Solo Album is Here! 🎤🔥
The highly anticipated moment has arrived! SF9‘s beloved main vocalist, Inseong, has officially made his solo debut, dropping his first mini-album, ‘Crossfade:’, and the powerful title track ‘Mute is Off.’ This marks a pivotal chapter for the artist, allowing him to step out as a distinctive voice and showcase a depth previously only hinted at. We’ve been eagerly awaiting this sound, and trust us, it delivers.

Released on January 14, 2026, at 6 PM KST across all major music platforms, ‘Crossfade:’ is more than just a collection of songs; it’s an intimate exploration of the self. The album delves into the intricate concept of two coexisting personas within one individual – the “real me” in solitude versus the “masked me” constructed under the gaze of others. This collision of identities, blurring and overlapping at their boundaries, forms the core narrative, offering fans a rare glimpse into the authentic inner world of Kim Inseong, distinct from his SF9 stage persona.
The mini-album features a total of five tracks, including the captivating title song ‘Mute is Off.’ The tracklist further includes the comforting ‘Feast Song,’ the endearing ‘In the Middle of Loving,’ the reflective ‘Memory Stained by You,’ and the wistful ‘You Were There Then, I Am Here Now.’ Notably, ‘Mute is Off’ holds special significance as it is Inseong‘s first-ever self-composed title track. This rock ballad masterfully blends his compelling vocals with a dramatic band sound, creating an intensely emotional and powerful sonic experience.

Expressing his sentiments on this monumental debut, Inseong conveyed a mix of excitement and gratitude. “It’s hard to describe in words how thrilled and thankful I feel,” he shared. He emphasized his joy in finally sharing his music with a wider audience and hoped they would fully immerse themselves in the album. “I’m so happy to kick off SF9‘s 2026 with the music I love most,” he added, highlighting his dedication.
Speaking of the album’s sonic landscape, Inseong revealed that every track is meticulously crafted with a full band sound, from intricate instrumental arrangements to detailed chorus work. He focused intently on the lyrics of ‘Mute is Off’ to ensure their clarity, showcasing a diverse range of vocal techniques within the rock ballad. The track is designed to be versatile, offering a message of comfort while also providing an energetic vibe perfect for driving, adapting to the listener’s mood.

For his debut self-composed title track, Inseong prioritized lyrics that deeply connect with the album’s overarching theme, aiming for an honest reflection of himself without being overly sentimental. He also described the music video shoot as a truly enjoyable experience, particularly working with adorable pets. He found the process of filling the set with his own music incredibly rewarding, seeing it as a significant step in his artistic development, elevating him as an artist. Every second of filming was precious to him, marking a proud and emotional journey.
For those looking to dive deeper, Inseong recommends listening to the entire album in sequence, as the tracks are designed to flow cohesively, each with its own distinct message and atmosphere:
- 🎤 ‘Mute is Off’: The powerful beginning, a rock ballad showcasing his distinctive voice.
- 💖 ‘Feast Song’: A track crafted to offer comfort and solace.
- ✨ ‘In the Middle of Loving’: Expressing the fluttering feelings of excitement and anticipation.
- 💭 ‘Memory Stained by You’: A reflective piece evoking a sense of recollection.
- 🌌 ‘You Were There Then, I Am Here Now’: Conveying a poignant, lingering sentiment.

Looking ahead, Inseong‘s goals for this album and his solo activities extend beyond personal growth. He aims to expand his musical spectrum, demonstrating the boundless potential of SF9 for 2026. Nearing a decade since his debut, he is determined to convey a message of continuous energy and broader activity, brimming with confidence. He shared that ‘Crossfade:’ has reignited his profound love for music, reminding him of the fervent passion he held when he first dreamt of becoming a singer. Most importantly, it has solidified his unwavering desire to perform for his cherished fans, FANTASY, for a lifetime.
To FANTASY, he expressed immense gratitude: “This album reminded me how much I truly love to sing. Performing for FANTASY, who are so precious to me, always fills me with excitement and nervousness. Thank you for making me and SF9 shine for so long. I promise to be an artist who can shine even longer and show you even better sides of myself. Words cannot express my thanks. See you on stage.”
Inseong’s solo debut is a masterclass in vocal expression, promising an electrifying stage presence when these powerful rock ballads translate to live performance. His commitment to authenticity and connection with FANTASY is a true testament to his artistry.
This solo venture by SF9‘s Inseong is more than just an album; it’s a declaration of his evolving identity and a powerful preview of the exciting music yet to come from both him and SF9. Don’t miss out on ‘Crossfade:‘!
Editor: Jason Lee 🎤













