"Just remember that it isn't a substitute for learning to control the dynamics with your touch!"Oh, thank you for THAT information, I have worked for more than 20 years as a professional pianist. This is quite new information! (ironically)
If you need the left pedal for some of the music you are playing, use it. Just remember that it isn't a substitute for learning to control the dynamics with your touch! You must learn to play the full dynamic range of your instrument (some are more responsive than others) by touch.The left pedal will make the instrument softer, that's true. But what it is especially useful for -- and where some music almost requires it -- is a subtle (or sometimes not so subtle) change in the quality of the tone. Hard to describe, but any good grand will have a definite change. Perhaps "more gentle" might be a way to describe it...Using it won't hurt anything at all.