1. Andrew Behery & Berwin Xie PLTW IED PERIOD 6 http://www.masterkit.com/rwc/images/fotos_productos/ligeras/harpsichord_double.jpg http://www.synthtopia.com/images/NEKO.jpg http://www.musicwithease.com/grand-piano.gif

4. Upright Piano was invented by Bartolomeo Cristofori http://www.pianokeyboard.com/images/pkc_cristofiori_hist.JPG 1709 1774 Soft Piano pedals were invented 1783 Sustain Piano pedals were invented http://www.google.com/imgres?imgurl=http://www.piano-lessons.net/images/assets/media/Pedal%2520Power.jpg&imgrefurl=http://www.infolizer.com/%3Ftitle%3DPiano%2Bpedals&usg=__mOEwt9_zF3gXSe2u1I4bxSjBJqY=&h=217&w=300&sz=10&hl=en&start=0&zoom=1&tbnid=gY8KSEqXvHJ8IM:&tbnh=132&tbnw=166&prev=/images%3Fq%3Dpiano%2Bpedals%26um%3D1%26hl%3Den%26safe%3Dactive%26sa%3DN%26rls%3Dcom.microsoft:en-us%26biw%3D1003%26bih%3D558%26tbs%3Disch:1&um=1&itbs=1&iact=rc&dur=499&ei=cBmJTMK1PIOjnge717C1Dg&oei=cBmJTMK1PIOjnge717C1Dg&esq=1&page=1&ndsp=15&ved=1t:429,r:4,s:0&tx=75&ty=89&safe=active 1766 Square Pianos were invented by John Zumpe 1720 Grand Piano invented by Bartolomeo Cristofori 1929 Digital Piano invented http://4.bp.blogspot.com/_mOsqmOB4z3s/Ru_k0KlmJ4I/AAAAAAAABJ0/4jISN74yvPo/s400/Neo-Bechstein.jpg http://orgs.usd.edu/nmm/2673.jpg http://www.music.vt.edu/musicdictionary/textp/images/grandpiano.jpg