Having scored a Top 40 pop hit with the casual and singsongy "Party Girl," fledgling San Antonian StaySolidRocky follows up with this seven-track EP. Fallin' plays out more like a bundle of tracks than a true debut made for thorough listening, though the set of productions verges on monotonous, leisurely and simple with little variation. It pulls together the tottering and more skeletal pre-"Party Girl" tracks "Soft Aggression" and "Toxic," includes a pair of emotive Big4Keezy collaborations -- of which "Vacant Heart'" is another standout -- and also features another new cut, "Viola," co-produced by the veteran Drumma Boy. The original "Party Girl" and an alternate version with Lil Uzi Vert flesh it out.