Here's some great programming from one of my favourite radio stations: WGBH (it's at the top of my iPhone radio list). I've never counted before, but like nearly every genre, the Villa-Lobos concertos add up. Let's see: 5 piano concertos (plus Momoprecoce, BB#3, Choros #11, and Introduction to Choros), 3 cello concertos, the concerto grosso, and concertos for harp, bassoon, harmonica, guitar, saxophone. Looks like WGBH might be including fairly obscure works in addition to these, to come up with 21 altogether. It's so great that we get to hear something other than a few Bachianas Brasilieras or works for guitar.
Mondays–Fridays, May 1–29, 10am on 89.7
(5pm on All-Classical WGBH) Classics in the Morning
The music of Heitor Villa-Lobos (1887–1959) offers a chance to explore the intertwining of European and South American roots that make up Brazil's vibrant culture. In this 50th anniversary year of the composer's death, hear one of his 21 concerti each weekday in May, including the early works, which spotlight piano and cello, as well as the later, less conventional textures of soprano saxophone and harmonica.