Answer the question at the end by quoting:

Tori Amos (born Myra Ellen Amos, August 22, 1963) is an American singer-songwriter, pianist, and composer. She is a classically trained musician with a mezzo-soprano vocal range. Having already begun composing instrumental pieces on piano, Amos won a full scholarship to the Peabody Institute at Johns Hopkins University at the age of five, the youngest person ever to have been admitted. She was expelled at the age of eleven for what Rolling Stone described as "musical insubordination.
In May 2008, Amos announced that, due to creative and financial disagreements with Epic Records, she had negotiated an end to her contract with the record label, and would be operating independently of major record labels on future work. In September of the same year, Amos released a live album and DVD, Live at Montreux 1991/1992, through Eagle Rock Entertainment, of two performances she gave at the Montreux Jazz Festival very early on in her career while promoting her debut solo album, Little Earthquakes. By December, after a chance encounter with chairman and CEO of Universal Music Group, Doug Morris, Amos signed a "joint venture" deal with Universal Republic Records.  Abnormally Attracted to Sin, Amos's tenth solo studio album and her first album released through Universal Republic, was released in May 2009 to mostly positive reviews. The album debuted in the top 10 of the Billboard 200, making it Amos's seventh album to do so. Abnormally Attracted to Sin, admitted Amos, is a "personal album", not a conceptual one, with the album exploring themes of power, boundaries, and the subjective view of sin. Continuing her distribution deal with Universal Republic, Amos released Midwinter Graces, her first seasonal album, in November of the same year. The album features reworked versions of traditional carols, as well as original songs written by Amos.  During her contract with the label, Amos recorded vocals for two songs for David Byrne's collaboration album with Fatboy Slim, titled Here Lies Love, which was released in April 2010. In July of the same year, the DVD Tori Amos- Live from the Artists Den was released exclusively through Barnes & Noble.  After a brief tour from June to September 2010, Amos released the highly exclusive live album From Russia With Love in December the same year, recorded live in Moscow on September 3, 2010. The limited edition set included a signature edition Lomography Diana F+ camera, along with 2 lenses, a roll of film and 1 of 5 photographs taken of Tori during her time in Moscow. The set was released exclusively through toriamos.com and only 2000 copies were produced.

Did she sing with anyone else?

Amos recorded vocals for two songs for David Byrne's collaboration album with Fatboy Slim,



Answer the question at the end by quoting:

Gaelic Ireland (Irish: Eire Ghaidhealach) was the Gaelic political and social order, and associated culture, that existed in Ireland from the prehistoric era until the early 17th century. Before the Norman invasion of 1169, Gaelic Ireland comprised the whole island. Thereafter, it comprised that part of the country not under foreign dominion at a given time. For most of its history, Gaelic Ireland was a "patchwork" hierarchy of territories ruled by a hierarchy of kings or chiefs, who were elected through tanistry.
For most of the Gaelic period, dwellings and farm buildings were circular with conical thatched roofs (see roundhouse). Square and rectangle-shaped buildings gradually became more common, and by the 14th or 15th century they had replaced round buildings completely. In some areas, buildings were made mostly of stone. In others, they were built of timber, wattle and daub, or a mix of materials. Most ancient and early medieval stone buildings were of dry stone construction. Some buildings would have had glass windows. Among the wealthy, it was common for women to have their own 'apartment' called a grianan (anglicized "greenan") in the sunniest part of the homestead.  The dwellings of freemen and their families were often surrounded by a circular rampart called a "ringfort". There are two main kinds of ringfort. The rath is an earthen ringfort, averaging 30m diameter, with a dry outside ditch. The cathair or caiseal is a stone ringfort. The ringfort would typically have enclosed the family home, small farm buildings or workshops, and animal pens. Most date to the period 500-1000 CE and there is evidence of large-scale ringfort desertion at the end of the first millennium. The remains of between 30,000 and 40,000 lasted into the 19th century to be mapped by Ordnance Survey Ireland. Another kind of native dwelling was the crannog, which were roundhouses built on artificial islands in lakes.  There were very few nucleated settlements in Gaelic areas. However, after the 5th century some monasteries became the heart of small "monastic towns". By the 10th century the Norse-Gaelic ports of Dublin, Wexford, Cork and Limerick had grown into substantial settlements. It was at this time, perhaps as a response to Viking raids, that many of the Irish round towers were built.  In the fifty years before the Norman invasion, the term "castle" (Old Irish: caistel/caislen) appears in Gaelic writings, although there are no surviving examples of pre-Norman castles. After the invasion, the Normans built motte-and-bailey castles in the areas they occupied, some of which were converted from ringforts. By 1300 "some mottes, especially in frontier areas, had almost certainly been built by the Gaelic Irish in imitation". The Normans gradually replaced wooden motte-and-baileys with stone castles and tower houses. Tower houses are free-standing multi-storey stone towers usually surrounded by a wall (see bawn) and ancillary buildings. Gaelic families had begun to build their own tower houses by the 15th century. As many as 7000 may have been built, but they were rare in areas with little Norman settlement or contact. They are concentrated in counties Limerick and Clare but are lacking in Ulster, except the area around Strangford Lough.  In Gaelic law, a 'sanctuary' called a maighin digona surrounded each person's dwelling. The maighin digona's size varied according to the owner's rank. In the case of a boaire it stretched as far as he, while sitting at his house, could cast a cnairsech (variously described as a spear or sledgehammer). The owner of a maighin digona could offer its protection to someone fleeing from pursuers, who would then have to bring that person to justice by lawful means.

How were they able to make the settlements so durable?
In Gaelic law, a 'sanctuary' called a maighin digona surrounded each person's dwelling. The maighin digona's size varied according to the owner's rank. In