Eh, you are probably better off with a track with a host of specific issues and qualities that you could test against. Hot treble to test for spikes, various instruments in mids to test timbre, something deep bass in the bass but also midbassy to test for elevation and spikes, range of male and female voices since that will also help you catch anything unnatural in the mids, and loads of percussion. Tape it vinyl clicks could also help with testing instrument separation.