Ahead of the release of his new single ‘The Existential Vacuum’ and an upcoming intimate Irish tour, David O’Neill chats to Daniel Anderson about the creative process behind his acclaimed debut album Patterns. Photos by Tara Thomas. The Irish music scene has a tendency to reward those that persevere. Conor O’Brien, Damien Rice, Christy Moore have forged lasting careers after leaving their respective bands while Glen Hansard is now experiencing worldwide success after a quarter of a century slogging it out with that other band of his. Another name likely to be added to that list is Daniel Anderson. Anderson was…