Pascal

Piano sound, and more...

I connected my MacBook Pro to Casio PX-780, connect via USB then MacBook audio headphone jack connected to PX-780 Line IN.  You will need adaptors (from Mic Plug to stereo mini-plug).  Note:  You can also use your iPhone and iPad (You will need Lightning to Data Adaptor that have USB in and power port), it works well for me,  too.  

Garageband on my MacBook automatically recognize Casio USB MIDI connection.  From there you can select a ton of instruments.  For piano have the preselected Grand Piano or you can pick Steinway Piano ... and Electric Keyboards, Synths, Guitars ...  You can also do sound shaping (Tremolo, Delay, EQ, etc)

The sound will be layered (combining instruments from both PX-780 and Garageband) as default.  To isolate Garageband instruments only, you must turn off Casio PX-780 instruments.  To do this, press FUNCTION  then use selector < > until you get MIDI, then press ENTER, then press selector <> in MIDI set until you get to LOCAL [OFF].  This now will have the audio output of MacBook coming out of PX-780 without the PX-780 instruments.  Basically you get a MIDI workstation using PX-780 as your input.  

With this setup you can do a whole range of music production, live looping or just using garage band instruments.

I particularly like GarageBand Classical Acoutic Guitar where it mimics the fret sound, pitch bends (by pressing hard on the key) and more.

Privia PX-780

Bank 1

011 Rising Sun         House of Rising Sun

021 70’s Soul            What’s Going On (C)

023 West Coast       Hotel California

024 Bossa Pop        Just The Way You Are (D)

035 Mexican Pop    La Bamba

064 50s Pop R&B   Stand By Me (C)

Bank 2

001 Canon               Canon in D Major (Pachelbel)

002 Air G String     Air in G String (Beethoven)

072 Benguine.        Begin the Benguine (Bb)

069 Carnival.          Brazil (F)

Bank 3

001 Love Ballad      Say You Love Me (Patti Austin) (F)

068 My Swing.       All of Me (C)

047 Friends            That is What Friends Are For (C)

094 Soul & Jazz    Body & Soul (Ebm)

097 Moon Swing   Moonlight Serenade (F)

019 Paradise          Another Day In Paradise (Am)

025 Wonderful       What a Wonderful World (C)

069 Your Things    All The Things You Are (Fm)

075 Vine Days.       Days of Wine & Roses (F)

I came across an article about Casio PX-780 about song loops.  It basically mentioned that this model have a built-in Chord Progression Loop feature.  As described:  86 "Jam Session" chord progression loops for learning song improv. This unique feature allows the player to learn how to "jam and improvise" with built in chord progressions with 86 recognizable "song loops" that make learning to play "by ear" fun and enjoyable. Ear training is a great way to play piano and helps with understanding music.  (from: https://azpianonews.blogspot.com/2013/02/review-casio-px780-digital-piano-best.html).  I hope someone from this forum can share how to access this feature.  The manual that came with the piano is very confusing.  It jumps from page to page.  It's very difficult to follow.