At first I almost thought that might have been the right one, in the song I'm referring to you can hear the male vocalist clearly yelling "WEST SIDE GRID".
Maybe it was some kind of a "one-off", unreleased song that nobody's ever heard of. PS: Unfortunately the radio station won't reply to "fan-mail", they probably have the info on all their music.
Thank you much for the reply, below is another, slightly different, screenshot of the "playlist", in this shot- the song is the eighth item down from the top.