Korg produces in various colors the Microkey 37-Key USB Midi Keyboard, the microKEY61 USB Midi Keyboard with Legacy, and the microKEY25 USB Midi Controller Keyboard.
Most modern MIDI devices come with a USB link that passes the MIDI signal to the USB socket of the computer. If a USB connection is not available then a MIDI to USB adapter (See links below) can be added to connect the standard MIDI sockets to the USB socket. These are widely available from various manufacturers at varying prices. The Mac usually recognises when a MIDI device is connected but they can be configured with the Audio & MIDI setup utility found in the Utilities folder within the Applications folder.
Most Yamaha keyboards have jacks for MIDI and USB cables. Recently, Yamaha keyboards have built-in MIDI and USB cables to give the keyboard a compact look.
It depends on the type of music you want to record. Modern MIDI equipment usually comes with a USB connection that will plug into the Macs USB sockets. Older MIDI equipment will require a MIDI to USB adapter to pass the MIDI signals to the Mac. Microphones are also available with a USB connection. Other equipment can be connected via an interface such as the ZBox, Inspire or similar (See links below) depending on individual needs and/or budget.
Yes, as long as it has a MIDI output or USB MIDI Interface, you can use it as a controller.
Midi to USB cables run from some sort of musical device (electronic keyboard, electric guitar, etc) to a USB port on your computer. You can use it to transfer midi files (music files) into your computer.
You should be able to use a singstar microphone with band hero. The developers designed the game to support any usb microphone.
A USB midi interface is used for various things, such as accessing files stores on a USB. You can also use it to connect to a computer that allows for various systems operations.
A USB MIDI keyboard is used as a controller to connect to most music software and MIDI hardware devices. It can be plugged into a computer to play and record music directly into a music program .
No. Akai MPD are USB MIDI controllers and work with programs with MIDI capabilities. Audacity doesn't do MIDI.
In theory there will not be any problems for a G4 handling USB to MIDI connections but if you are considering one of the many cheap USB to MIDI converters with built in drivers there is a very high failure rate with numerous combinations of computers / MIDI equipment failing. It is better to stick with a name brand ideally from the MIDI equipment manufacturer.
A MIDI controller sends MIDI note messages to another device by MIDI cables or USB to a computer. If it is strictly a MIDI controller with no onboard sounds, it will have to connect to another MIDI device or computer to make sounds.