In contrast to the upright bass (also called "double bass"), the electric bass guitar is played horizontally across the body, like an electric guitar. When the strings are plucked with the fingers (pizzicato), the index and middle fingers (and sometimes the thumb, ring, and little fingers as well) are used. James Jamerson, an influential bassist from the Motown era, played intricate bass lines using only his index finger, which he called "The Hook." There are also variations in how a bassist chooses to rest the right-hand thumb (or left thumb in the case of left-handed players). A player may rest his or her thumb on the top edge of one of the pickups or on the side of the fretboard, which is especially common among bassists who have an upright bass influence. Some bassists anchor their thumbs on the lowest string and move it off the lowest string when they need to play on the low string. Alternatively, the thumb can be rested loosely on the strings to mute the unused strings.
I brought in several other pianists for our test panel. Liz Kinnon is a pianist/arranger/composer/educator from Los Angeles who has performed with artists such as Dizzy Gillespie and Andy Williams. She was an orchestrator on the animated shows Animaniacs, Pinky and the Brain, and Histeria. At the Colburn Community School of Performing Arts in Los Angeles, she teaches jazz piano and is the Director of Adult Jazz Combos. She was Ryan Gosling’s piano coach for La La Land and recently worked with Simon Pegg and Juno Temple for the film Lost Transmissions.
Extended-range basses (ERBs) are basses with six to twelve strings—with the additional strings used for range rather than unison or octave pairs. A seven-string bass (B0–E1–A1–D2–G2–C3–F3) was built by luthier Michael Tobias in 1987. This instrument, commissioned by bassist Garry Goodman, was an early example of a bass with more than six single course strings. In 1999 South American ERB player Igor Saavedra designed one of the first eight-string ERBs known, and asked Luthier Alfonso Iturra to build it for him.  Conklin builds custom ERB basses. The Guitarbass is a ten-string instrument with four bass strings (tuned E–A–D–G) and six guitar strings (tuned E–A–D–G–B–E). Luthier Michael Adler built the first eleven-string bass in 2004 and completed the first single-course 12-string bass in 2005. Adler's 11- and 12-string instruments have the same range as a grand piano. Subcontrabasses, such as C♯–F♯–B–E (the lowest string, C♯0 being at 17.32 Hz at around the limit of human hearing) have been created. Ibanez had released SR7VIISC in 2009, featuring a 30-inch (762 mm) scale and narrower width, and tuned as B–E–A–D–G–C–E; the company dubbed it a cross between bass and guitar.[better source needed]
Since there are so many digital pianos worthy of your attention in this catalog, you may want to narrow down your choices using some of the search options on the sidebar. For example, if you select stage digital pianos under the category section, you'll be presented with all the digital pianos that were made for the stage. Once here you have the opportunity to drill down even further and can search by topics like number of keys, MIDI/USB Connections or by whether or not the digital piano has built-in speakers.