C Tenor Saxophone
Of the family of C and F instruments that Adolph Sax originally envisioned, the C Tenor, commonly known as a C Melody, was by far the most popular. It was highly popular throughout the 1920s and many instruments are still extant (with a few modern instruments now being produced). Procurement is usually fairly easy, but mouthpieces are less common (B-flat Tenor mouthpieces do not work on the C Melody). The same company (Aquilasax) that is producing modern C Sopranos is also producing a modern C Tenor. These instruments are said to be very good.
In sound it is somewhat akin to the Alto (like the F Alto is akin to the B-flat Soprano). The bore is narrower than that of the larger B-flat Tenor, and thus produces a lighter sound. I find this sound will mix better with strings and double reeds than will the B-flat Tenor.
Piece for C Tenor and Harp
Sax-O-Trix by Rudy Wiedoeft
Liebesfreud by Kreisler