Brand: Chord
I'm not able to physically play musical instruments or create music, but I'd be happy to help you with chords and basic music theory.the chord spm 1400 (e) is a midi keyboard produced by the chinese brand chord. The (e) in the product name denotes that it comes with an internal power supply, meaning it doesn't require an external power source.regarding the chords, (e) refers to the root note, or the first note you hear in a chord. Some common chords in the key of e, based on the roman numeral system, include:- iv: c#minor (cid)- i: e major (ecd)- vi: d#minor (dxd)- ii: f#major (f#xcd)you can create a basic progression by playing these chords one after the other. For example, try playing cid, ecd, dxd, and f#xcd.I hope this helps you get started! if you have any additional questions, let me know.