The band is not called "slash" or "stroke" or "line" or "dash" or "hyphen" or any such nonsense. The band is called -. The phonetic pronunciation of - is absurdly simple. Repeat as follows: "-"
WHO?
Neil: gitbox + vocals.
Conor: percussion.
WHAT?
- play music.
WHERE?
- were formed in South Dublin because that is where we live.