strings usually tuned B0-E1-A1-D2-G2, which provides extended lower range. Five string basses tuned to B-E-A-D-G (and sometimes A-D-G-C-F) are often used in contemporary rock and metal alongside seven string guitars , baritone guitars , and otherwise downtuned instruments. Another common tuning used on early five-string basses is E-A-D-G-C, known as "tenor