After 30 years and almost as many records, one would think that Howe Gelb and his Sandpeople would run out of ideas. That is certainly not the case here, and the Troubadour of Tucson unbuckles his seatbelt and plows the Plymouth straight into the musical desert for more songs rendered unusual and off-kilter. His quirky poetic sensibility informs “Heaventually,” and the band gets tribal on “Hurtin’ Habit,” makes good use of glitches and tweaks on a weirdly gruesome “Transponder,” then becomes staid and straightforward on “Every Now and Then.” Gelb paints a humorous picture of domestic bliss on “Home Sweat Home,” then visits the barroom on the luscious instrumental “Bitter Suite.” In less capable hands, this would sound like an inconsistent hodgepodge but, as usual, Gelb’s quixotic presence glues it all together. So here is another Giant Sand record, fit for a road trip on a dark highway or a head trip in a dark room.