When a star dies, tributes pour in from everywhere.
Those that get the most attention are often those offered by other music legends and household names even if they had no genuinely close affiliation.
But the most meaningful and heartfelt tributes are those proffered by lesser-known figures who were truly there; who spent many years with the recently-departed on their musical journey.
This week Ian Chapman highlights two poignant tributes to David Bowie, as performed by longtime friends and musical collaborators Gail Ann Dorsey and Mike Garson.
In addition, he recalls a similarly heartfelt tribute to George Harrison as performed by his close friend and frequent collaborator, the late Billy Preston.