David Bowie's farewell came just days after his 69th birthday. Most notably days after his final album "Blackstar" was released. With that album a music video also became available to the public day's before David's passing. According to the producer of the Blackstar album, David knew he was dying and wanted to leave a partying gift for his fans. 

I could be wrong but not since Johnny Cash's "Hurt" in 2003 was some one able to say good bye to their fans through music like Bowie did here in his newest and last video for his haunting song "Lazarus"