Hindsight · review build · data not yet validated
Musicians commonly use electronic controllers which emulate the playing style of the old acoustic instruments (e.g., piano, guitar, violin, drums).
Grader A: hit
Electronic instruments that emulate acoustic ones were common by 2009: digital pianos, MIDI keyboards and electronic drum kits were standard gear, and electronic drums grew more popular in the 2000s. Game controllers shaped like guitars and drums sold tens of millions of units. No sales-share figure was retrieved, so the verdict rests on product ubiquity.
Test: Common use among musicians: digital pianos and e-drum kits standard products; guitar and drum game controllers sold with 25 million Guitar Hero units by 2010. Exact 2009 share of electronic vs acoustic instruments not retrieved.
Grader B: hit
Electronic controllers that emulate acoustic instruments were common by 2009. Digital pianos and MIDI keyboards were standard. Roland's V-Drums (TD-10, 1997) gave mesh-head electronic drum kits used by many well-known drummers. Electronic wind and guitar controllers existed as niche products. Keyboards and drums alone make the claim true.
Test: Test: 20% of musicians routinely use electronic controllers that emulate acoustic instruments. Digital keyboards/pianos and electronic drum kits were mass-market products by 2009, used by a large share of keyboardists and many drummers.