In architecture, a crypt (from the Latin crypta and the Greek κρύπτη, kryptē; meaning concealed, private) is a stone chamber or vault beneath the floor of a burial vault possibly containing sarcophagi, coffins or relics.

Originally crypts were typically found below the main apse of a church, such as at the Abbey of Saint-Germain en Auxerre, but were later located beneath naves and transepts as well. Occasionally churches were raised high to accommodate a crypt at the ground level, such as St Michael's Church in Hildesheim, Germany.

First known in the early Christian period, in particular North Africa at Chlef and Djemila in Algeria, and Byzantium at Saint John Studio in Constantinople. Where Christian churches have been built over mithraea, the mithraeum has often been adapted to serve as a crypt.^{[citation needed]}

The famous crypt at Old St. Peter's Basilica, Rome, developed about the year 600, as a means of affording pilgrims a view of Saint Peter's tomb, which lay, according to the Roman fashion, directly below the high altar. The tomb was made accessible through an underground passageway beneath the sanctuary, where pilgrims could enter at one stair, pass by the tomb and exit, without interrupting the clerical community's service at the altar directly above.

Tegan and Sara are a Canadian indie band formed in 1995 in Calgary. Composed of identical twin sisters Tegan Rain Quin and Sara Keirsten Quin (born September 19, 1980). Both Tegan and Sara play guitar and keyboard and write their songs.

Tegan and Sara Quin were born September 19, 1980 in Calgary, Alberta. They began playing guitar and writing songs at age 15. They initially played as Plunk without a drummer or bass player. In 1997, they used their school’s recording studio to record two demo albums: Who's in Your Band? and Play Day. In 1998, they won Calgary's Garage Warz competition, using the studio time they won to record their first professional demo, Yellow tape, which was followed by Orange tape and Red tape.

Two songs from Red tape appeared on their first album, Under Feet Like Ours, which they released independently in 1999 under the name "Sara and Tegan". They later changed their name to "Tegan and Sara" because it was easier to pronounce and reprinted the album using that name. They also wanted their name to stand out amongst the other 'Sara' musicians at the time such as Sarah McLachlan and Sarah Slean. Tegan was easier to remember.^{[citation needed]}Neil Young's manager signed them to Young's Vapor Records label, and they released This Business of Art through Vapor in 2000. They have toured extensively since then.