Sir George Martin has been described as “visionary” and “a musical genius” as tributes flooded in following his death at 90.

Sean Ono Lennon, son of John and Yoko, posted a picture of Sir George on Instagram, captioned on Twitter.

 

Beatle Ringo Starr shared pictures and tributes on Twitter.

Ringo’s lead was followed by generations of musicians, producers and fans from Lenny Kravitz and Josh Groban to Sir Roger Moore, Prime Minister David Cameron and Mark Ronson.