Former hedge fund investor recently purchased one-of-a-kind album 'Once Upon a Time in Shaolin'
Hedge fund manager drew criticism by increasing the cost of a life-saving drug by 5,000 per cent
Just one copy of the album exists
Wu-Tang Clan rapper was not present at the time of attacks
Rapper and producer to direct his third film next year
Rapper discusses possibility of a film about the legendary hip-hop group
Former Red Hot Chili Peppers guitarist John Frusciante and George Clinton also feature on tracks
Christ Bearer of the group Northstar has spoken about last year's incident for the first time