The 20th century wasn't all that long ago--- there were and are many hundreds of Musical Instruments, if not thousands world wide. What kind of information are you looking for?
1901 - 2000.
The year 1990 belongs to the 20th century. The 20th century spans from the year 1901 to 2000. Therefore, any year from 1901 to 2000, including 1990, is part of that century.
The year 1987 falls in the 20th century. The 20th century spans from the year 1901 to 2000. Therefore, any year from 1901 to 2000, including 1987, is considered part of the 20th century.
January 1, 1901.
1901 to 2000
the 20th century is also called the Dissonant Period.
3901
It went from 1901 to 2000, a span of 100 years which is also known as a century.
The year 1999, as with any year between 1901 and 2000, was in the twentieth century.
The year 1930, as with any year between 1901 and 2000, was in the twentieth century.
The year 1981, as with every year between 1901 and 2000, is in the twentieth century.
Yes. The 20th century ran from 1901 to 2000, so it included the 1950s.