Atelier Organ


For players who know how truly enjoyable an organ can be!

Music Assistant
  • All new Music Assistant settings (250 titles)
  • Fill-In function assigned to the right footswitch on all Music Assistant settings
  • All songs from Club Roland Introduction learning modules included
  • Songs from Hal Leonard EZ Play Today book included
    • A selection of songs from Book #200 The Best Songs Ever
    • A selection of songs from Book #57 More of the Best Songs Ever
  • Music Assistant search function by “Club Roland,” “EZ PLAY 200,” and “EZ PLAY 57”
    • You can find songs quickly with keyword search
Music Styles
  • New American Music Style content (100 new Music Styles)
  • New “Advanced Chord Recognition” system
    • You can achieve a more natural musical feel by playing chords with the Advanced Chord Recognition system
  • 8-part accompaniment
    • The 8-part accompaniment (maximum) allows you to create gorgeous musical arrangements
Realistic Rhythms and Music Styles

The AT-45 puts a wide range of rhythms and musical genres at your fingertips. The built-in Music Styles incorporate actual drum and percussion phrases recorded by professional drummers, for the ultimate playing enjoyment with lively, exciting rhythms.

Versatile Style Orchestrator

The Style Orchestrator buttons provide four arrangement variations that let you instantly change the style of the automatic accompaniment, either to something more elaborate or more simple.

Rhythm Customize

The AT-45’s Rhythm Customize feature lets you edit the internal rhythm patterns using the LCD display. Adjust the drum pattern, voice, or timing to create your own original rhythm.

Search Functions for Ideal Rhythms Rhythm Search

With the Rhythm Search function, you can effortlessly search by name, beat, tempo, genre, or groove to quickly select the ideal rhythm for the style of music you are playing.

One Touch Program
  • New One Touch Program screen
    • 2 individual titles are named to each One Touch Program group. You can hold this “Group” screen until you touch Exit
  • New One Touch Program settings for new Music Styles
Powerful Playback and Rich Reverb

Two 25 cm full-range speakers in a speaker box faithfully deliver the resonant bass sounds that are essential to dynamic organ performance, while the high-quality reverb creates an incredible room-filling ambience. You’ll think you’re playing in a cathedral.

The Fine Organ Sounds of Top ATELIER Models

The AT-45 features many of the same great new authentic organ sounds as the top ATELIER models, including jazzy combo organ, gorgeous pipe organ, and theater organ sounds that will satisfy every organ lover. Of course, it also offers a wide collection of instrument, choir, and fun human voice sounds, such as jazz scat, to expand your performance possibilities.

Exceptional Piano Performance

The AT-45’s lower manual is an extended 64-note keyboard, and begins with the A note just like a piano. There is also a damper pedal for more acoustic piano-like performance. The lower manual has a Split function, too, so you can play two different instrument sounds at the same time.

Compatible with Any ATELIER Organ

With the built-in floppy disk drive, you can exchange data with other AT-Series models, so you can immediately use registrations and music files created on any ATELIER organ.

Large Color LCD Touch Screen

The AT-45 is the first organ in its class to feature a large, full-color LCD touch screen just like the top ATELIER models. Now even more realtime performance options are at your fingertips.

Other Features
  • New Factory Registration set (8 settings)
  • American Flag as the default Main Background screen
  • “American Classic” ID badge
Onscreen Panel Settings and Registration

You can display current voice, reverb, and other panel settings onscreen, and adjust them easily at the touch of a finger. Settings can be saved with the eight registration buttons conveniently located between the upper and lower manuals. Just press a button to instantly change settings or voices.

Seeing is Enjoying

With the colorful LCD touch screen, the Composer and Track Mute functions are easier than ever to use. You can add your performances to commercially-available or downloaded SMF music files and save them, or mute a specific voice or part right on the screen, and play that part. The AT-45 also features Roland’s famous DigiScore, which lets you display the notation of SMF music files or your own recorded songs onscreen. It’s loads of fun.

Helpful Quick Guide

The intuitive onscreen Quick Guide gives you fast operational guidance for all the AT-45’s formidable features and functions, so you can always enjoy the full potential of your ATELIER organ.

49 notes (C3-C7)
64 notes (A1-C7)
20 notes (C2-G3)
Touch Response
Initial Touch (Sensitivity adjustable)
Expression Pedal (ready for the Active Expression feature), Damper Pedal Foot Switches: 2 switches (on the expression pedal, function assignable)
Sound Generator
Conforms to GM2/ GM/ GS/ XG lite
185 Voices (incl. 8 Active Expression voices)
Max. Polyphony
128 voices
Drums/ SFX Sets
12 drum sets + 1 SFX set
Upper: Max 3 parts (Upper Organ, Upper Orchestral, Solo*), Lower: Max 3 part (Lower Organ, Lower Orchestral, Solo*), Pedal: 1 part (Pedal), Split Function: Solo To Lower, Bass To Lower
*The solo part is available for either Upper or Lower
Rotary Sound, Reverb, Sustain, Glide, Pitch Bend, Vibrato, Lower Voice Hold
Automatic Accompaniment
110 rhythms in 10 categories, 156 rhythms on the included Music Style Disk
Disk/ User Rhythms
4 Rhythms
Voices for Accomp./ SMF
226 voices
Arranger Control
Arranger On/ Off, Start/ Stop, Sync Start, Intro/ Ending, Intro Count Down, Break, Fill In (To Variation, To Original), Style Orchestrator (Basic, Advanced 1, Advanced 2, Full), One Touch Program, Chord Intelligence, Chord Hold, Leading Bass, Auto Standard Tempo
One Touch Program
880 settings (8 settings for each rhythm)
Other Functions
Registration Memories
Registration Functions
Load Next, Disk Edit
Harmony Intelligence
8 types
Key Transpose
-4 to +7 (Half steps)
Playback Transpose
-24 to +24 (Half steps)
Master Tuning
415.3Hz - 466.2Hz (0.1Hz steps)
Great Staff/ G Clef Staff/ F Clef Staff, Lyric display, Note name display, Bouncing ball
Rhythm Customize
Pattern editing of the internal rhythms (Drum Set, Beat, Tempo, Note)
Note Storage
Approx. 40,000 notes
Song Length
Max. 999 measures
Quarter note = 20 - 500
120 ticks per quarter note
Realtime (Replace)
Edit Function
Delete Measure, Delete Track, Erase, Copy, Quantize
2/ 2, 0/ 4, 2/ 4, 3/ 4, 4/ 4, 5/ 4, 6/ 4, 7/ 4, 3/ 8, 6/ 8, 9/ 8, 12/ 8
10 levels
4 types
Disk Format
3.5 inch micro floppy disk 2HD (1.44 M byte), 2DD (720 K Byte)
Max. 99 songs
Playable Format
Music Atelier original format, Standard MIDI Files (format 0/ 1), Roland original format (i- format), Standard MIDI Files for GM2/ GM/ GS/ XG, Music Style Disk (MSA/ MSD/ MSE Series)
Music Atelier original format, Standard MIDI Files (format 0)
Rated Power Output
35 W + 35 W
25 cm x 2 (Full Range)
Graphic 320 x 240 dot backlit color LCD with touch screen
Headphones jack (stereo) x 2, Audio Output jacks (L/ mono, R), Audio Input jacks (L/ mono, R), Mic Input jack, MIDI connectors (In, Out), AC Inlet
Simulated Mahogany
Owner’s Manual, Power Cord, 3.5 inch micro floppy disk (2HD Blank Disk), Music Style Disk, World Style Disk
Power Supply
Power Supply
AC 117 V, 230 V, 240 V
Power Consumption
120 W

Size and Weight ( Total )
1,242 mm
48-15/16 inches
570 mm
22-1/2 inches
1,225 mm
48-1/4 inches
84.0 kg
185 lbs. 3 oz.
*The specifications are subject to change without notice.




If you have questions about operating your Roland product, please check our Knowledge Base for answers to the most common questions.
You can also contact our Product Support department by phone or email.
In addition, we have a library of Owner’s Manuals and Support Documents that you can download and reference.

Owner's Manuals

Support Documents