A concrete starting point
do re mi fa sol la ti do = 1 2 3 4 5 6 7 1 in movable-do major
Hear a tonic before naming a degree
Play a C major chord or a sustained C, then sing do–mi–sol–mi–do using C–E–G–E–C. Move the center to D and preserve those relationships as D–F#–A–F#–D. The syllables stay the same in movable-do while the pitch names change. Without an established tonic, a syllable is an assumption rather than a fact about a note.
Minor approaches differ
Do-based chromatic solfege often sings natural minor as do re me fa sol le te do. La-based minor uses la ti do re mi fa sol la for the relative natural-minor collection. Conventions vary, including ti versus si and altered-degree syllables. Neither approach makes every minor-key passage identical to natural minor; a raised leading tone changes the seventh-degree syllable under the chosen convention.
Make a short call and response
Sing a three-note pattern slowly and check it at the keyboard. The scale-degree trainer offers listening questions against a tonic, while the virtual piano lets you record note events for replay. These tools do not grade your singing or use a microphone to identify syllables. Keep phrases in a comfortable range and treat a missed answer as a clue to compare two nearby degrees.
Put it into practice
These examples describe explicit written notes and relationships. A diagram or generated phrase does not replace listening to a complete musical context, choosing a comfortable register or checking a physical technique with a teacher.