Grandaddy are no more: the band decided to split in 2006, citing their refusal to release material on major labels or playing at sponsored venues and the resultant inability to make any money. They had formed as a trio in Modesto, California in 1992, expanding to a five-piece in 1995, and finally releasing their first album (after four self-financed efforts) Under The Western Freeway.
Musically, they are somewhat hard to define, but Wikipedia finds their country-tinged guitar style similar to Jeff Lynne of ELO, the vocals in the Neil Young key, and the keyboard style inspired by Philip Glass. Jason Lytle seems to be environmentally conscious, and The Crystal Lake (FF 2000 #50) seems to be a tale of rural America and its poisoning by pollution (he once worked in a sewage treatment facility).
I was lucky, I grew up a little too far out and had to make up my own ways of having fun, like walking in the orchards with my dog. But the kids that live in between the big city and nothing, like the kids who live in Modesto, I feel bad for them. There is nothing to do except sit around and do drugs, or get someone pregnant in the bushes. [Lytle]
It comes from the album The Sophtware Slump, whose other songs also betray this influence. The energetic buzz of guitars is underlined by the unnaturally soothing washes of a repeated keyboard figure: it resulted in a UK no. 38 chart entry. The members have all moved on to other bands, with Lytle going solo. A Christmas-related song by them is also available here.