The marimba is a percussion instrument consisting of a set of sticks that are struck with yarn or a rubber mallet to produce a tone. A resonator or tube suspended under the wood bar amplifies the tone. The wooden strips of the chromatic marimba are arranged in a manner similar to the keys of a piano, with two or three sets of temporary marks erected vertically and overlapping with the natural marks to provide visual and physical assistance to the player. The marimba is a musical instrument, but it has a louder range and a deeper pitch than the xylophone. A person who plays the marimba is called a marimba player or marimba player. Modern uses of the marimba include solo, woodwind and brass ensembles, marimba concertos, jazz ensembles, marching bands (prelude ensembles), drum and orchestral compositions. In recent years, contemporary composers have increasingly used the unique timbre of the marimba. (https://en.wikipedia.org/wiki/Marimba) The xylophone is an instrument in the percussion family, consisting of a wooden stick, struck with a mallet. Each stick is a sonic instrument and is tuned according to the pitch of the scale, such as the pentatonic or heptatic scale of many African and Asian instruments, the diatonic scale of many Western children's instruments, and the chromatic scale used in orchestral music. (https://en.wikipedia.org/wiki/Xylophone) The tremolo is an instrument in the percussion subfamily of the percussion instrument family. It consists of a well-tuned metal rod, usually played with two or four soft mallets hitting the wooden rod. A person who plays the tremolo is called a tremolo player or a tremolo harp player. The tremolo is similar to any keyboard instrument. One of the main differences between the tremolo and other mallet instruments is that each wooden stick is suspended above a resonance tube, and there is a butterfly valve driven by a motor at the top of the resonance tube. These valves are connected to a common shaft, and when the motor drives the shaft to rotate, it will produce a vibrato or vibration effect. The tremolo also has a piano-like sustain pedal. When the pedal is pressed, the bar on the pedal will make a weak sound. When the pedal is depressed, the bar will last for a few seconds, or until the pedal is silent. (https://en.wikipedia.org/wiki/Vibraphone) The carillon is a percussion instrument consisting of a set of tuned keys arranged in a manner similar to the keyboard of a piano. In this respect, it is similar to the xylophone, but the bars of the xylophone are made of wood, while the bars of the carillon are made of metal plate or tube, so it is a metal piano. In addition, carillons are usually small in size and have a higher tone due to their smaller material and size. In German, the carillon is also called the glockenspiel, while in French it is often called the carillon. In musical notation, the carillon is sometimes referred to as "campanelli" in Italian ". https://en.wikipedia.org/wiki/Glockenspiel管钟 (also known as chimes) belong to the percussion instrument family. Their sound resembles that of a church bell, carillon, or bell tower; the original pipe bells were made to replicate church bells in an orchestra. Each tube bell is a metal tube with a diameter of 30-38mm, which is tuned by changing its length. https://en.wikipedia.org/wiki/Tubular_bells马林巴琴、木琴、颤音琴 Real is a percussion simulation app that uses yarn mallets and rolling features. Frequency range: C3 -> F6 (marimba, tremolo), G4 -> C8 (xylophone), C4 -> F7 (glockenone), C5 -> F8 (tube clock) more offline and online practice tracks (adjustable speed, shift and reverb). Multiple playing modes:-Full (left hand and right hand)-Right hand only-Right hand (auto or piano left hand)-Real time-Auto play (preview) Support multi-view and adjustable user interface for the best experience. Recording function: recording, playing and sharing to friends. Ringtone export function: export and save. wav file to storage space (adjustable speed and transposable). **Songs updated regularly