Endlessness is a 45-minute exploration of life cycles and rebirth, featuring 10 tracks with a continuous arpeggio throughout. Following the success of her 2021 debut Space 1.8, Sinephro elevates her sound, blending jazz, orchestral, and electronic music. Composed, produced, and engineered by Sinephro, the album features performances from Sheila Maurice-Grey, Morgan Simpson, James Mollison, Lyle Barton, Nubya Garcia, Natcyet Wakili, Dwayne Kilvington, and 21 string players from Orchestrate.