EXPLORE #344 on October 21, 2008
Seen in Paris, France.
This is a "natural" photograph. No editing (except cropping), no color enhancing.
More on Wikipedia:
"The double bass or contrabass is the largest and lowest-pitched bowed string instrument used in the modern symphony orchestra. It is a standard member of the string section of the symphony orchestra  and smaller string ensembles  in Western classical music. In addition, it is used in other genres such as jazz, 1950s-style blues and rock and roll, rockabilly/psychobilly, bluegrass, and tangokt.
Double basses are constructed from several types of wood, including maple for the back, spruce for the top, and ebony for the fingerboard. It is uncertain whether the instrument is a descendant of the viola da gamba or from the violin, but it is traditionally considered to be a member of the violin family. While the double bass has features which are similar to those found on other violin family instruments, it also has features which may be derived from the viols.
Like many other string instruments, the double bass is played either with a bow (arco) or by plucking the strings (pizzicato). In orchestral repertoire and tango music, both bowing and plucking styles are used. In jazz music, the bass is mostly plucked, except for some solos which are performed with the bow. In most other genres, such as blues and rockabilly, the bass is plucked."