Possible Clues:

• Pair of pitches, I see, make a CID matter
• Pair of pitches, I see, for a CID
• Pair of black sailors, I see, may be acid
• Sort of acid scale descending to one hundred
• Pitch twice, I see, for a CID
• Sharp article on old police force leaves a sour taste
• A pair of sailors, I see. Enough to make one acid