11. Its keypad has three extra notes _ all black _ at the bottom of the bass clef . 12. Ruffo's initial concert promotion activities with Bass Clef Entertainment included concerts by Culture Club and Duran Duran. 13. Inside, the banisters are decorated with bass clefs , and there is a 53-inch television in the living room. 14. Bass instruments use the bass clef but may occasionally use the treble clef and transpose down an octave. 15. Trombone parts are typically notated in bass clef , though sometimes also written in tenor clef or alto clef. 16. Works from the Classical period notes descend to low G ( written in bass clef as G3 ). 17. Levin has also written a book of career anecdotes and road stories called " Beyond the Bass Clef ". 18. A true shrine, it resembles a bass clef from the air and suggests a large piano keyboard from the side. 19. Both the fantasy and sonata are linked by a focus on the bass register and octaves in the bass clef . 20. In bass clef composers differed in whether they expected the instruments to transpose down a fifth or up a fourth.