CitySchools & EducationSt. Vrain Valley School DistrictMediaVideo LIVE video: LHS Jazz Band Concert Dec 4, 2017 Please note: this video may not be available after the concert is over. It's dependent on whether or not the folks at LHS post the finished/recorded stream publically. By Longmont Observer - December 4, 2017 402 Est. Reading Time: 1 Share on Facebook Tweet on Twitter The Longmont High School Jazz Band In Concert Dec. 4th, 2017.