Although normal bias, it DOES work great for recording high level music. I routinely record in the red on the meters and this tape handles it all perfectly, nearly as well as some high bias tapes. But no cassette is as good as, say, a TDK SA-90 high bias, but those are so expensive that I don't bother with them anymore. But after over 45 years of recording music on tapes, I have noticed something interesting. Normal bias tapes like these tend to retain more of the original quality recording for much longer than high bias cassettes do.