This is called a glissando although generally a glissando doesn't involve all the keys.
No, a saxophone has keys like other woodwind instruments. Brass instruments have valves.
It is an electronic keyboard that has not fully weighted keys like a real piano, but has a softer keys. Keys are gradually gets softer touch going trough left to right. İe some harder touch at the left, gets lighter touch at the right.. Like an acoustic piano.. bass keys are harder.. treble keys are softer...
impact
Alicia Keys - Like You'll Never See Me Again
What??
There are a large variety of different places where one can learn how to make bump keys. These places include, but are not limited to, websites like E how and Instructables.
You don't need one. (Someone left the keys in them?)
You would call them a locksmith. Locksmiths make keys for everyday use.
A key maker. -.-
To keep from losing keys on vacation, a person can put their key on a necklace and wear it around their neck. If that isn't feasible, have someone in the group carry a bag and put the keys in there.
A key enthusiast is one way to identify them. There is no actual term to refer to someone who collects keys out of enjoyment, but if they keep the keys out of fear that they may find a use for them after throwing them away, they are potentially a compulsive hoarder.
It seems like you misplaced your keys and someone found them in a drawer while searching for them in your house. It's a common occurrence when trying to locate lost items.
someone made it that way
locksmith
Someone can find pictures of Alicia Keys on pretty much any photo sharing website such as Imgur or Imageshack. Photos can also be found in magazines that she was featured in.
This is called a glissando although generally a glissando doesn't involve all the keys.