Usually the numbers appear in small print on the top or front surfaces of the keys. For example ... The Basic Qualities of a Business Letter. Business letters are usually much more formal ...

Other useful connectivity options include a dedicated audio output, which will be particularly useful if you don’t have one on your phone or tablet, and MIDI I/O so that the iRig Keys 2 Mini can be ...

Here’s how it works. It’s update time for IK Multimedia’s iRig Keys MIDI keyboard range, with two second-generation models landing today. Each of these has 37 velocity-sensitive keys, the, ahem, 'key ...