It depends on what you intend on using your camera for.
Landscape? Macro? or Portraits? For example.
Landscape: Smaller mms
Macro: Larger mm.
Portraits: 70-18mm, that's what I have for my Sony DSLR and I'm sure it applies to most cameras aswell.
Any canon ef or efs lenses will fit on all of canon's dslr
All lenses with Nikon mount are compatible with Nikon D40. If the question rephrase : "What lenses are able to autofocus with Nikon D40", then the answer is : the new Nikon AF-S lenses (with Silent Wave Motor inside), Sigma lens bearing HSM code, and upcoming Tamron lenses (18-200mm, 17-50mm and 70-300mm).
Pachelbel's Or Canon in D, by Pachelbel.
That is was composed by Johann Pachelbel and is called the Canon in D.
There are reasonably good keyboard versions of the Canon in D.
Look up "Canon in D major for violins" in a serach engine.
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Pachelbel's Canon (Canon in D Major by Johann Pachelbel)
Canon in D is Pachelbel's most famous composition. It was composed in early 1600's. It is paired with a gigue in the same key.
Reviews of the Canon D 320 camera can be found on various websites and forums. A good example is the shopping website Amazon, which offers customer reviews, the official Canon website, CNet and Find The Best.
Canon in D
The tone or key would be D.