The answers to the clues below will have something in common.

1. Clever and witty, especially said of an older person
2. Delivery without drugs
3. Group that refutes facts on the shape of our world

Answers:

1. Sharp as a tack
2. Natural childbirth
3. Flat Earth Society

The first words of each answer are musical terms - called accidentals.

Credit:
Clare Hansbrough
ACCIDENTAL BEGINNINGS