Pseudonym the attempt was not entirely successful – and the two are still sometimes confused by booksellers. A pen name may be used specifically to hide the identity of the author, as in the case of exposé books about espionage or crime, or explicit erotic fiction. Some prolific authors adopt a pseudonym to disguise the extent of their published output, e.g. Stephen King writing as Richard Bachman. Co-authors may choose to publish under a collective pseudonym, e.g., P. J. Tracy and Perri O'Shaughnessy. Frederic Dannay and Manfred Lee used the name Ellery Queen as both a pen name for their collaborative
Pen name their pen name. In this case, typically the pen name would be included at the end of the prose or poetry. Composers of Indian classical music used pen names in compositions to assert authorship, including Sadarang, Gunarang (Fayyaz Ahmed Khan), Ada Rang (court musician of Muhammad Shah), Sabrang (Bade Ghulam Ali Khan), and Ramrang (Ramashreya Jha). Other compositions are apocryphally ascribed to composers with their pen names. Japanese poets who write haiku often use a "haigō" (俳号). The haiku poet Matsuo Bashō had used two other haigō before he became fond of a banana plant ("bashō") that had been given