Keith McIvor, the Scottish DJ better known as JD Twitch, has died at 57 after being diagnosed with an untreatable brain tumour earlier this year. He died peacefully at The Princess of Wales Hospice in Glasgow on Friday, according to a statement posted by his fellow DJ and Optimo partner Jonnie Wilkes. Wilkes described McIvor as a force of “intensity and passion for life, for music, for creativity and for positive change” and said his energy would live on in fans and collaborators.
McIvor’s death closes a defining chapter in Glasgow’s club scene. He co-founded Optimo Espacio, a weekly program that ran at Sub Club from 1997 to 2010 and helped launch a global appreciation for eclectic, genre-spanning dance music. The duo—McIvor and Wilkes—built a reputation for transforming Friday and Sunday nights with a flexible, go-anywhere sound that drew on house, techno, disco and post-punk textures. After Optimo Espacio concluded its formal club night, the pair continued to tour under the Optimo banner, performing hundreds of shows across continents.
In its early years, Optimo Espacio helped redefine Glasgow’s Sub Club as a launching pad for international DJs and a gathering place for fans from around the world. McIvor, originally from Edinburgh, had previously launched the Pure club night in his hometown in the 1990s before moving to Glasgow and linking with Wilkes in 1997 to establish Optimo. The final Optimo night at Sub Club drew more than 500 attendees, with revelers traveling from Belgium, Canada and the United States to bid farewell. The closing track that night was Nina Simone’s “Feeling Good,” a symbolic coda to a period of unusually cohesive, boundary-pushing programming for the era.
Ahead of his death, McIvor had disclosed that he had been diagnosed with a brain tumour, later identified as a glioblastoma, and that his condition was untreatable. In July he told fans he had been unable to perform due to illness, and his wife, Marissa, organized a Crowdfunder page that raised more than £147,000 in under three months to support around-the-clock care as his health deteriorated. Wilkes, who posted updates and tributes on social media, thanked fans and staff at The Hospice for their care and emphasized the personal bond the two men shared after more than a quarter-century of collaboration.
Wilkes recalled a 28-year partnership that “changed my life immeasurably” and helped push their music into places “few people are lucky enough to explore.” He emphasized McIvor’s belief in community and collective strength, writing that his friend’s “intensity and passion for life, for music, for creativity and for positive change simply never let up.” The tributes poured in from fellow DJs and musicians who described McIvor as a towering influence who inspired countless others to explore new sounds and collaborative ways of making music.
The Optimo project began at a time when Glasgow’s club scene was becoming a magnet for international talent, and the duo’s approach stood out for its openness to different genres and its sense of communal experience. McIvor’s work also extended beyond Optimo Espacio, with the Edinburgh-born artist contributing to a broader wave of UK producers, DJs and club businesses that helped shape a modern, interconnected dance music culture. The range of responses—from fellow DJs to prominent electronic acts—underscored the breadth of his impact and the sense of loss felt across the scene.
As fans and colleagues reflected on McIvor’s legacy, many highlighted how Optimo Espacio helped internationalize Glasgow’s nightlife while remaining deeply rooted in the city’s own club culture. The project’s emphasis on experimentation, inclusivity and a resistance to formulaic programming left a lasting imprint on how clubs curated the night’s best in music—often by taking audiences on unexpected journeys rather than cycling through a fixed playlist.
The cultural footprint of McIvor’s career extends beyond the dance floor. Industry peers cited his mentorship of younger DJs, his willingness to book overlooked or emerging artists, and his insistence on a sense of shared purpose among artists, fans and venue staff. The tone of these remembrances echoed Wilkes’s own messages, with the two men consistently portraying music as a collaborative endeavor that thrived on communal energy and mutual support.
In recent weeks, as McIvor’s illness progressed, fans who had grown up with Optimo Espacio posted memories of nights that felt transformative—moments when a late-night set opened doors to new sonic landscapes and left a lasting impression well after the club lights came up. Those who knew him described a person whose depth of knowledge about music matched his relentless drive to push the boundaries of what a club night could be. The period of reflection also highlighted the broader sense of loss to the UK’s electronic music community, given McIvor’s role in shaping a generation of producers and DJs who would go on to influence club culture far beyond Glasgow.
Keith McIvor’s passing closes a chapter that signaled a turning point for a generation of club culture in Scotland and beyond. The Optimo story—built on curiosity, collaboration and a fearless approach to musical experimentation—will be remembered as a blueprint for how club nights can become cultural institutions. While the precise approach to programming may evolve, the spirit of Optimo Espacio—its insistence on inclusivity, its willingness to embrace the unexpected, and its commitment to community—will live on in the playlists, performances and partnerships that continue to echo the duo’s legacy. Friends, fans and musicians across the world continue to pay tribute to a figure who helped shape how audiences experience music in clubs and how artists imagine the possibilities of collaboration.