iAno (ianus in spanish) is a tremendous, amazing iphone and ipod touch application that turns it (iphone – ipod touch) into a virtual piano with an excellent sound. iAno provides good features to keep rolling your music needs:

A complete four octave keyboard.
Multi-touch. Up to 5 keys can be pressed at once allowing complex chords.
Sounds like a real piano with realistic piano multi-samples.
Animated piano keys react to your touch.
Play along to all your MP3s.
On-screen keyboard navigation allows you to easily move up and down by octaves or “part octaves” (ie. left-most key is a C or an F).

Video Demo

Get iAnos here

How to install
First you need to jailbreak your iPhone to allow third-party applications to be installed.
Add the “ModMyiFone.com” repository to your Installer.
Click on the Installer Icon.
Click on the “Sources” icon at the bottom.
Click “Edit”.
Click “Add”.
Enter: “http://modmyifone.com/installer.xml”.
Click “OK”.
iAno will appear under the “Toys” section of installer.

But iAno is not totally done, the creator is announcing future features in development:

Navigation
The top bar will show the entire keyboard, with the current octave highlit, you can click on this bar to change octaves. This will mean you can jump around the piano keyboard much easier, and can visualise where you are. It will also help when the number of keys increases to a full keyboard.

Sound
It will contain a full 88 key piano keyboard with each key individually sampled in stereo from a grand piano.
The sound engine will be modified to give a local volume setting, and potentially deaden the sound on key-up to allow for playback of notes with varying lengths of sustain.

Other Instruments
Switchable between different piano types such as “honky tonk”. Note that non-piano sounds are going to be part of a separate app.

Recording and Playback
The ability to record and playback, so that you could record one part of a duet and then play over the top of it.

The ability to save and load recorded songs.
The ability to load / convert existing MIDI files into songs to play back. This will mean you can export your song into MIDI, load it into some editting package on your desktop, and correct your mistakes. Also you’ll be able to convert some horribly complex classical piece into iAno format and then claim you played it live.