Douglas Harper's Etymology Dictionary
abbreviation of Latin nota bene "note well."
Wiktionary
alt. (abbreviation of nota bene English) interj. (abbreviation of nota bene English)
Wikipedia
N.B. is the second studio album released by British singer-songwriter Natasha Bedingfield. It was released in the United Kingdom on 30 April 2007 through Phonogenic Records. Upon release the album was praised for Bedingfield's vocals and the fun theme to the records however some critics were disappointed noting that the material was not as catchy as her debut project, Unwritten. In the United Kingdom it produced two top ten hits, " I Want to Have Your Babies" and " Soulmate".
On 22 January 2008 the album was released in the United States and Canada under the name Pocketful of Sunshine with new packaging and an alternative track listing featuring only six of the original songs. The US version's title song became a top-five hit whilst the lead single, " Love Like This" with Sean Kingston, became a top-twenty hit. US critics said that although the album was definitely a pop record it felt inorganic and awkwardly assembled.