Context: He has written one book of short stories entitled Turasóireacht  which was published in 1995 by Coiscéim. Subsequent stories have been published in the anthologies Scéalta ón Aer  ag Cathal Póirtéir and in Lón Léitheoireacht 2 . His début novella Pat the Pipe - Píobaire  was published in 2007 and a translation of Sandy Fitzgerald's children's story Céal & an Buachaill Gorm  was published in early 2008. He wrote a monthly article on music for online magazine Beo.ie from 2006 to 2011 and these articles formed the basis of a collection of esays on music in a book called Istigh sa Cheol . One of the articles An Ghaoth Aneas was included in the New Island publication Sunday Miscellany - A Selection from 2006 to 2008 following its broadcast in 2008 on RTÉ Radio 1. This same article was included, along with a sister article Ag Máirseáil i dTreo na Gréine, as a tribute to Pádraig Ó Cléirigh, in a posthumous collection of Pádraig's short stories published by Coiscéím in 2010, entitled An Bhréag & Scéalta Eile. In 2017 his book on a campaign of civil disobendience in the west Kerry Gaeltacht, Dún Chaoin was published Dún Chaoin - Oscail an Scoil.

Question: For how many years did he write a monthly article on music for Beo.ie?

Answer:
5