Complex sentence: In that same year the band performed live at the Revolver Club in Madrid, along the band Grass, where they recorded their first work "JB en Revolver Club (Directo 1993)".
Split into simpler sentences: In that same year the band performed live at Madrid's Revolver Club along the band Grass. At this instance the band recorded their first work, "JB en Revolver Club (Directo 1993)".