At least four bands named Nap

1) French hip-hop group

2) shogaze , dreampop band in japan

It was formed in Tokyo in 2001.

member: eri : vocal
nogawa : all instulments

bio : 「four scenes which has light」 (2001)
「nap 2001-2005」

disperse in 2005.

3) brazilian one-man-band

4) Dutch gypsy music orchestra.

Nap has a large repertoire of Hungarian, Rumanian and Russian gypsy music.
They like making plenty of contact with the audience while playing
They play at their audience's table, at their ear or even walking.
In that they always are very welcome guests at all possible festivities.

(translated and adapted from http://www.zigeunermuziek.com/nap.html)

5) Croatian rock band