There may be many drums at a pow wow, especially weekend or week long ones, but each pow wow features a "host drum" which is accorded great respect. The members of drum groups are often family, extended family, or friends. Groups are then often named for families, geographic locations, tribal societies, or more colorful names. Many groups display their names on jackets, caps, vehicles, and chairs. Traditionally only men would drum and women would sit behind the men singing high harmonies. Beginning in the mid-1970s, women began drumming with men and "seconding", or singing, an octave higher, the song. Today, there are mixed-gender and all-female drum groups.