The keyboard section of an orchestra or concert band includes keyboard instruments. Keyboard instruments are not usually a standard member of a 2010-era orchestra or concert band, but they are included occasionally. In orchestras from the 1600s to the mid-1750s, a keyboard instrument such as the pipe organ or harpsichord normally played with an orchestra, with the performer improvising chords from a figured bass part. This practice, called basso continuo, was phased out after 1750 (although some Masses for choir and orchestra would occasionally still have a keyboard part in the late 1700s).