Any time you feel like you've stepped through a door to another era at a show, it's usually because the band on stage is perpetrating a hopelessly retro musical crime against the audience. Contemporary heavy music is especially guilty of this. But once in a while a group will embody well-worn influences so deftly that it takes the sound in interesting directions. Space in Time (due at the Larimer Lounge on Saturday, January 10) is one such band, though it's clearly the spawn of latter-day hard-rock acts like Rainbow, Deep Purple and Humble Pie. However, this act has also learned more than a few tricks from more recent heroes of guitar rock like Kyuss and Sleep. The result is a surprisingly forceful and melodic brand of rock and roll welcome in an era when attention to songcraft is too often lacking.