The most common harp is 47 strings, containing 6 octaves plus a set of highest notes, weighing about 36 kg. The bottom one and a half octaves use steel strings, the middle range uses the gut string, and the treble is different for each person's preference for sound. Sometimes it is one octave or one half octave, using nylon strings; Because I don't like the crisp and bright tone of the nylon strings, I use the sausage strings from the middle range. The weight and height of the harp are quite amazing. For example, the 38-string ordinary harp is 155 cm high and weighs about 20 to 25 kg.
The small harp is also the Irish small harp, also known as the Celtic harp. This piano has 19, 23, 32, 34, or even 38 strings. The large pedal harp used in the symphony orchestra is a revolutionary development of the small harp. It is about 90 cm high and 55 cm wide and has no pedals. Compared to the pedal harp, it is less thick and more light.