We just acquainted ourselves with “Lost+,” the Prospekt’s March version of “Lost!” with a Jay-Z verse affixed, but less than 24 hours later, here’s “Glass Of Water,” in its live debut. Chris Martin & Co. are accompanied on the track by Stroke Albert Hammond, Jr., the band’s current tour support. Musically, it basically sounds like anthemic Coldplay with a little bit of post-punk guitar. The crowd doesn’t look too excited.