- What actually separates this from jazz proper?
- The proportion of improvisation and dissonance. Jazz is mostly rotating solos over extended harmony; smooth jazz cuts the solo to an eight- or sixteen-bar ornament and uses agreeable major-seventh and minor-seventh shapes with no substitutions or outside notes. Improvisation calls for jazz; background calls for smooth jazz.
- How do I avoid results that sound like a keyboard demo?
- Specify technique and tone rather than genre: “soprano sax with audible breath, slides and vibrato on phrase ends,” “electric piano with a light chorus,” “sampled acoustic kit, short reverb on the snare.” The polish of the style comes from production detail, and naming instrument behavior gets you there.
- When should I choose this over lo-fi background music?
- Ask whether you need a stated melody. Smooth jazz gives you a lead line a listener could hum, which suits commercial spaces that want content without noise. Lo-fi has no strong melody and works through loops and surface texture, which suits places where the music should never be noticed at all.