Stepping on the left pedal of an upright piano can make the hammer closer to the strings and reduce the volume. Therefore, when we need to control the volume, but the skill can't reach it, we can use two strings in the string, and the other string that misses will also make a sound because of resonance, but the timbre will obviously soften and darken.
In addition, when the left pedal is lightly depressed, but not fully depressed, the range of the whole keyboard and the string striking machine moving to the right will be smaller than when it is fully depressed. At this time, although the hammer didn't hit the three strings of the sound, it was softer than the commonly used part with three grooves, which would make the sound darker and softer and make the timbre slightly changed. Marking of left pedal
The use term of the left pedal is generally "una"
Corda "(meaning" a string ". Of course, this is impossible on modern pianos, because there are actually "two strings" to mark them, and when they are released, they are marked as "tre"
Corde "or" Tuttle Corde "("three strings "). Specific application of left pedal
Use the left pedal not only because you want to play softly, but also to consider the needs of timbre and artistic conception in music. Sometimes composers will clearly mark it, such as Beethoven's late sonatas 106, 1 10.
In the second movement, the left pedal was marked many times. Liszt asked for more works on the left pedal, such as Roar of the Forest, Waltz of Mephisto fellers and hungarian rhapsody No.65438 +0 1.
First "and so on. He Lvting also marked the use of the left pedal in Cowboy Piccolo.
As we know when learning and learning the correct pedal, composers will not necessarily mark all the places where the pedal should be used, but also use all the places where it should be used. The same is true for the use of the left pedal. We carefully analyzed the places marked by the composer. Perhaps the composer wants to reflect the mysterious dreamland and hazy atmosphere, Perhaps it is to show the contrast of strength, light and shade, rigidity and softness. .........................................................................................................................., for example, Debussy's Moonlight, Arabian Customs, Chen Peixun's Autumn Moon in Pinghu, Du Mingxin's Water Plant Dance and Wang's Orchid, are too numerous to mention.
The left pedal, like the right pedal, is not only knowledgeable in "stepping" but also artistic in "releasing". No one likes to listen to long, boring and light performances, which will not only change the timbre, but also make people feel bored. If you don't want to make a contrast with the sudden strong segment, then your left foot should be lifted at the right time, and the movement should be slower, so that the left pedal can be "put down" without trace. In fact, when many pianists use the left pedal, they only step a little more than when they step on the pedal completely. Fu Cong, a famous pianist, used the left pedal for the sake of music when playing Chopin's nocturne. With the development of melody, the enhancement of intensity and the change of texture, he unconsciously brought the audience into a new realm, and no one noticed when his left pedal was released, which was wonderful.
Finally, I want to remind students that the use of the left pedal is a very detailed work, and beginners had better use it under the guidance of teachers.