A question to speakers of languages like BSC, Slovenian or Lithuanian. I am sure you can hear tonal movements in the languages that lack tonal oppositions. Those tones exist, but remain unnoticed by native speakers, which are untrained to perceive them. I recall, in a Russian manual of BSC, in a chapter explaining the differences between rising and falling tones, I read that Russian tends to have one of these tones in open syllables and another one in closed (don't remember which in which). Something similar may exist in other Slavic and non-Slavic languages as well. Would be grateful if you share your observations. A sidenote: I should confess, despite my 20+ years attempts, I cannot distinguish between acute and circumflex intonations in plain long vowels in Lithuanian: to the extent that I would never have guessed they exist there at all. In BSC and Slovenian, I can hear the rising or falling intonation, which is pretty strong there, but I rather associate it with the entire word, and in any case I cannot say which one is rising and which one is falling.