David Furnish has paid the sweetest tribute to his "spectacular" husband Elton John in honour of the singer's 75th birthday on Friday.MORE: Elton John's £5.3m mansion with husband David is ultimate party padSharing a snapshot of the star playing on a keyboard, doting husband David gushed: "Sharing a moment of creation. To celebrate the creation of Elton Hercules John. 75 years ago today he arrived on this planet.