[Thanks to Henry]
Leroy Anderson (1908-1975) was an American composer of short, light concert pieces, many of which were introduced by the Boston Pops Orchestra under the direction of Arthur Fiedler. As with all his other compositions, Leroy Anderson wrote The Typewriter for orchestra, completing the work on October 9, 1950.
This particular orchestration was performed in a June 12, 2011 concert by members of the National Orchestra and Chorus of Spain in Madrid.
The (typewriter) soloist is Alfredo Anaya.