I am becoming an increasingly large fan of the Baroque composer George Telemann. Let me indulge my newest passion.
From the cantata, Machet die Tore Welt, this is soprano Teresa Stich-Randall singing the aria "Jesu, komm in meiner Seele":
This is the Concerto for Transverse Flute:
Finally, his Viola Concerto 2 - not many viola concertos out there, and this one is lovely: