Wasiu Omogbolahan Olasunkanmi Adewale Ayinde Marshal (born 3 March 1957), known professionally as K1 De Ultimate, is a Nigerian Fuji musician. He popularised a brand of the genre based on the work of its creator, Ayinde Barrister, known as "Talazo Fuji".
Marshal discovered his interest in music at the age of eight, persisting despite initial parental opposition to win local competitions by age 15. He served in Ayinde Barrister's band, the Supreme Fuji Commanders, from 1975 to 1978, having previously worked as an instrument packer. He later adopted the name "Ayinde" with the blessing of his mentor, Ayinde Barrister.
In 1980, he released his debut album, Iba, featuring the track "Abode Mecca". This was followed by his breakthrough album, Talazo '84, in 1984, which established the "Talazo" brand of Fuji and expanded the genre's audience.
Following his international tour debut in 1986, including performances at London's Hammersmith Town Hall and New York's SOB's, Marshal has continued annual global tours. Notably, he performed at the 1995 WOMAD Festival, showcasing Fuji music on a global stage, and has frequented venues like Troxy and WOMEX.
In August 2020, he released the experimental *Fuji the Sound* EP featuring artists like Teni and Toby Grey. His prolific output continued with the release of the album *Alafin Xtra* in 2024 and *Ganusi (Fuji Classical)* in 2025. By early 2026, he released several live albums, including *Allied International Club UK (Live)* and *Coronation of á»Âba OlùmẹÃÂgbá»ÂÃÂn AkÃÂnwá»ÂÃÂn IV (Live)*.
Recognized for his cultural impact, Marshal was installed as the first Mayegun of Yorubaland in January 2020. In October 2022, he was awarded the Member of the Order of the Niger (MON) by President Muhammadu Buhari. He was subsequently named the Olori Omooba of Akile Ijebuland by the Awujale of Ijebuland in September 2023.
In August 2025, K1 was involved in a confrontation aboard a ValueJet flight regarding a flask suspected to contain alcohol, an incident that led to his removal from the aircraft and a brief placement on a no-fly list. Following the event, Marshal issued a formal apology, clarifying that the flask contained water for medical purposes rather than alcohol.
By late 2025, the Nigerian Civil Aviation Authority (NCAA) and the airline reviewed the incident; following a series of mediations and a commitment to safety protocols, the administrative ban was lifted, and Marshal resumed regular travel with the carrier.
Studio albums
Live Albums (Recent & Selected)
Selected Concerts
|- |1989 |K1 De Ultimate
|Key to the City of San Francisco, California | |-
|1990 |K1 De Ultimate
|Key to the City of Florida | |-
|2013 |K1 De Ultimate
|The Headies Hall Of Fame | |-
|2014 |K1 De Ultimate
|City People Lifetime Achievement Award | |-
|2020 |K1 De Ultimate
|Mayegun of Yorubaland (Chieftaincy) | |-
|2022 |K1 De Ultimate
|Member of the Order of the Niger (MON) | |-
|2022 |K1 De Ultimate
|Fuji Vibrations Honorary Award | |-
|2023 |K1 De Ultimate
|Olori Omooba of Akile Ijebuland (Chieftaincy) | |-
|2023 |K1 De Ultimate
|Honorary Doctorate Degree (IPSM, England) | |-
|2024 |K1 De Ultimate
|Federal Government Airport Security Ambassador | |-
|2025 |K1 De Ultimate
|Balogun of Ilupeju Ekiti (Chieftaincy) | |-