David Bowie's filmmaker son Duncan Jones has broken his social media silence following his father's death a week ago (10Jan16).

The Moon director returned to Twitter on Sunday (17Jan16) and shared a letter a care physician wrote about his dad.

Jones, 44, who announced he would be "offline for a while" following's Bowie's death, tweeted the thank you letter from British palliative care consultant Dr. Mark Taubert, who revealed the rock star's private approach to his health struggle aided a dying patient he was assisting.

"I had a discussion with a hospital patient, facing the end of her life," Taubert wrote. "We discussed your death and your music, and it got us talking about numerous weighty subjects, that are not always straightforward to discuss with someone facing their own demise.

"In fact, your story became a way for us to communicate very openly about death, something many doctors and nurses struggle to introduce as a topic of conversation."

The care physician also thanked Bowie for his final album Blackstar, which was released two days before the singer's death, adding, "Thank you for (single) Lazarus and Blackstar. I am a palliative care doctor, and what you have done in the time surrounding your death has had a profound effect on me and many people I work with.

"Your album is strewn with references, hints and allusions. As always, you don't make interpretation all that easy, but perhaps that isn't the point."

Meanwhile, Bowie's life was celebrated in London on Sunday night (17Jan16) as fans flocked to Islington's Union Chapel to pay tribute to the 69-year-old icon.

The Magic Numbers and former Sex Pistols bassist Glen Matlock were among the stars who performed Bowie tunes following an emotional fan sing-along of his hit Starman.

Former Pink Floyd bass player Guy Pratt and The Feeling also teamed up for a performance of the late rocker's Life on Mars.

The five-hour tribute concert was streamed live on YouTube, and also featured clips of Bowie's videos and interviews, as well as spoken word segments from top music journalists and collaborators.

Profits from the show benefited MacMillan Cancer Support.