Baroque accompaniment made up of a bass part together with numbers (figures) indicating the chords to be played above it. usually the basso continuo is played by two instruments, a keyboard plus a low melodic instrument.
Arc and the dome to create a new architectural style
the rounded arch
I dont know if this will help, but He Played The Organ, Harpsichord and the Violin.. I hope this will help a bit. Good Luck!
1- c 2-b 3-b 4-c 5-b not sure about number four but c is the most accurate I could find