lobbying
There are many theories as to how a serial killer becomes one or the habits when stalking their prey. Actually there is no official explanation. In most cases, the serial killer don't walk after or behind his prey but waits in a place for it or ambushes the prey after getting to a place the prey is enganging in some activity. We have the example for the Zodiac mureders. He stalked couples in cars when they were making out. Ted Bundy wore fake casts to get victims to him. Albert Fish is the man who some believe to be the "most deranged killer in American history". He cannibalised childrens by getting their parents to trust him. Walking behind a prey is not something we see normally in serial killers.
On the harpsichord the strings are plucked, while on the clavichord they are striked. Because of this, the harpsichord is unable to make sounds louder or softer, though they're usually much louder than the clavichords'. To this also helps the fact that harpsichords have a air chamber below the strings, which reverbates, amplifying the sound. On some harpsichords there is another manual (keyboard), positioned above the normal one, with another set of strings, which produces a slightly different sound from the lower manual. When combined they produce a richer sound.