Accent ? (

[d_iego]

I have an auditon this monday for a jazz band. In one of the audition's music i have to play there's a symbol or accent on top of the note like a parenthesis '(' opening up:




--__--
_--_
| |
|--_-
|
|
|
|

Does any one know how should that be played?
thanks,
Diego Mendieta