While digital pianos may sometimes fall short of a real piano in feel and sound, they nevertheless have other advantages over acoustic pianos. Digital pianos cost much less than an acoustic piano and most models are much smaller and lighter in weight than an acoustic piano. In addition, digital pianos do not need to be tuned, and their tuning can be modified to match the tuning of another instrument (e.g., a pipe organ). Like other electronic musical instruments, digital pianos can be connected to a keyboard amplifier or a PA system to produce a sound loud enough for a large venue. Some digital pianos can also emulate other sounds besides the piano, the most common ones being pipe organ, electric piano, Hammond organ and harpsichord. Digital pianos are often used in music schools and music studios to replace traditional instruments.
Snare drum and tom-tom Typical ways to muffle a snare or tom include placing an object on the outer edge of the drumhead. A piece of cloth, a wallet, gel, or fitted rings made of mylar are common objects. Also used are external clip-on muffles that work using the same principle. Internal mufflers that lie on the inside of the drumhead are often built into a drum, but are generally considered less effective than external muffles, as they stifle the initial tone, rather than simply reducing the sustain of it.
Six strings are usually tuned B0–E1–A1–D2–G2–C3—like a four-string bass with an additional low B string and a high C string. Some players prefer B0–E1–A1–D2–F♯2–B2, which preserves the intervals of standard six-string guitar tuning (an octave and a fourth lower) and makes the highest and lowest string the same note two octaves apart. While less common than four or five-string basses, they appear in Latin, jazz, and other genres, as well as in studio work where a session musician's single instrument must be highly versatile, and to facilitate sightreading in the recording studio. Alternative tunings for six-string bass include B–E–A–D–G–B, matching the first five strings of an acoustic or electric guitar with an additional low B, and E–A–D–G–B–E, completely matching the tuning of a six-string guitar but one octave lower allowing the use of guitar chord fingerings. Rarer tunings such as E–A–D–G–C–F and F♯–B–E–A–D–G provide a lower or higher range in a given position while maintaining consistent string intervals. In 1974, Anthony Jackson worked with Carl Thompson to create the Contrabass guitar (BEADGC). Later, Jackson brought his ideas to Fodera and worked with Ken Smith to create a wider-spaced Contrabass guitar, which evolved to the modern six-string bass.