Purely for the convenience of keyboard instruments, Baroque pitch is A415, a semitone lower than A440.

巴洛克式的音高标准定于A415， 比A440 低半级音，方便于键盘乐器 。

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Electronic organ is a modern electronic music technology and the product is a new type of keyboard instruments.

电子琴是现代电子科技与音乐结合的产物，是一种新型的键盘乐器。

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The ancestry of the piano can be traced to the early keyboard instruments of the fifteenth and sixteenth centuries --- the spinet, the dulcimer, and the virginal.

钢琴的家系可以追溯到第十五和第十六世纪---一样，早期的键盘乐器扬琴。

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During the Renaissance, musicians played the trombone in town bands, royal ceremonial bands, and in mixed ensembles with string and keyboard instruments and voices.

NPR: Young Tuba Player Gets Nod from Phila. Orchestra

The "MIDI Makes Music" campaign, sponsored by a coalition of leading industry companies and organizations including, Roland, Yamaha, Gibson, Fishman, Dave Smith Instruments, Korg, Dream, Mediamation, NAMM, AES, Keyboard Magazine, Electronic Musician Magazine and Robertson Communications, is designed to educate consumers about the benefits of MIDI technology.

ENGADGET: MIDI turns 30, gets year-long birthday bash from daddy Alt

The old church organ was replaced by a keyboard some years ago and the church makes use of young members who play electric guitars, violins and wind instruments.

BBC: Congregation outgrows church