To determine which two instruments are featured in the piece, we can use the process of elimination.
Since we only need to identify one instrument to know the other, let's eliminate pairs:
-
Piano and Cello: Both instruments could reasonably be in a piece together.
-
Drums and Piano: Again, possible as they are often found together.
-
Flute and Bassoon: These are both woodwind instruments and could also be paired.
-
Trumpet and Saxophone: Both are brass and woodwind instruments respectively and can also complement each other.
If we consider a common pairing in music, piano is often paired with string instruments like the cello.
If we know one of the instruments, such as the piano, it could help identify the other. The most logical and versatile pairing from classic music would be with the cello (since flutes and bassoons might not often feature with a piano).
Hence, the answer is likely piano and cello.