Julia Wolf has joined forces with Sleeping With Sirens vocalist Kellin Quinn for her latest single, “lamb,” released September 9.

Following her 2026 single “Deep End,” Wolf turns toward the uneasy space between trusting someone and questioning what that trust could cost. “lamb” builds its central metaphor around vulnerability: giving someone the ability to care for you also means giving them the ability to hurt you.

Quinn’s appearance feels especially fitting within Wolf’s increasingly genre-blurring sound. The collaboration also carries personal significance for Wolf, who has listened to Quinn’s music for years and cited his voice and sonic world as an inspiration. The pair recorded together in Portland, bringing two distinct corners of alternative music into the same track.

At just over two minutes, “lamb” keeps its focus tight. Wolf’s softer delivery meets Quinn’s instantly recognizable vocals, adding another layer to a song already caught between tenderness and unease. The single arrives alongside an animated music video directed and animated by Dylan Oscroft.

watch the music video here!

The release comes during a major year for Wolf. Her single “In My Room” recently reached No. 1 at Alternative Radio, while her next headline run, the Deep End World Tour, begins September 17 after a September 12 supporting appearance with Pierce The Veil at Petco Park in San Diego.

With “lamb,” Wolf continues pushing further into alternative territory without losing the vulnerability at the center of her songwriting — this time bringing one of the scene’s most recognizable voices along with her.

Stream “lamb” featuring Kellin Quinn now on all major streaming platforms.