How It Works
The core principles that keep SingLet systematic, readable, and singable.
SingLet Design Principles
Natural SingLets keep the familiar letter names A, B, C, D, E, and G, while F shifts to Fi. In pronunciation, these correspond to /eɪ/, /bi/, /si/, /di/, /i/, /fi/, and /dʒi/.
Note F gets rid of its alphabetic pronunciation of /ɛf/, two discrete phones, and obtains /fi/, a CV.
This lets the natural domain preserve direct letter-name identity while improving singability where it is most needed.
Going to the accidentals, written A stays vowel-initial when followed by a vowel, so the A family takes no consonant onset. By contrast, written E takes the consonant onset "/j/" as "y" as in "yeh /jɛ/" to preserve a smooth CV shape.
The consonant onsets are: A→/-/ (missing), B→/b/, C→/s/, D→/d/, E→/j/, F→/f/, and G→/dʒ/.
These are the foundations for A-G pitch classes, permitting a systematic design for using distinctively V (and VN) rhymes to flag both accidental directions (sharp vs flat) and accidental tiers (single, double, ...).
Accidental directions (sharp vs flat) and tiers (single, double, etc.) are distinguished by systematic vowel shifts. Natural notes rhyme with a bright vowel /i/, single and double sharp SingLets move toward darker vowels (/ɑ/ and /ɔ/), and flat SingLets toward /ɛ/ and /u/, respectively. These create a mnemonic ladder from bright to dark vowels.
Higher tiers extend the system to /ɑn/ and /ɔŋ/ for triple and quadruple sharp notes, and /ɛn/ and /uŋ/ for triple and quadruple flat notes.
Vowels and consonants are selected for ease of articulation across many languages, supporting global clarity and singability. Each SingLet syllable avoids high-frequency homophones in English, Mandarin Chinese, Hindi, Spanish, French, and other major languages, reducing the risk of misinterpretation.
As a result, even when the sharp, flat, double sharp, or double flat vowels are not pronounced exactly, they are still acceptable and will not be confused with a different category. For example, the flat vowel is written as /ɛ/ for clarity, while /æ/ or /e/ are also acceptable realizations.
Once the design logic is clear, the full system page gathers the natural-note table, accidental families, and the pattern summary in one place.