Language: 1) Encoding: a) audio, b) visual, c) other senses, d) combinations of a, b, and c.; 2) Mainly "Signal Based Communication" (SBC); 3) Relatively high stress for transmitter (~9-10 on a qualitative scale of 0-10); 4) Uses conventional time "t" including past and future; 5) Uses: syntax, adjectives, verbs, adverbs, prepositions, nouns, pronouns et al.; 6) Stress for listening receivers ~8-10; 7) "Language can be lies!"; 8) Found for humans only.
  SBC without language: 1) Lacking "Rhythm Based Communication" (RBC); 2) Relatively high stress for transmitter (~9-10); 3) Stress fields include: a) territory, b) hierarchy, c) reproductive, d) food / (money) and accumulation of goods, e) psychological; 4) Follows the postulates of Darwinian Evolutionary Theory; 5) Universal communication.
  Music with lyrics: 1) Communication as in language, including up to ~10% RBC (~90% SBC); 2) Stress for listening receivers lowering to ~8-9; 3) Humans only.
  Poetry: 1) Communication as in language, with up to ~20% RBC (~80% SBC); 2) Stress for listening receivers lowering to ~7-8; 3) Humans only.
  Music with "poetic" lyrics: 1) Communication as in language, with up to ~30% RBC (~70% SBC); 2) Stress for listening receivers lowering to ~6-7; 3) Probably humans only.
  Rhythmic music and dancing: 1) Up to ~40% RBC; 2) Stress for listening receivers/dancers lowering to ~5-6; 3) Possibly many organisms.
  Rhythmic drumming: 1) Up to ~50% RBC; 2) Stress for listening receivers ~4-5; 3) Probably many organisms. 
  Meditation: 1) Up to ~60% RBC; 2) Stress reducing to ~3-4; 3) Possibly many organisms. 
  Sleep: 1) Up to ~70% RBC; 2) Stress reducing to ~2-3; 3) Probably many organisms. 
  Sincere "mature" love (without libido): 1) Up to ~80% RBC; 2) Increasing altruism; 3) Increasing instantaneous communication of emotions; 4) Complete messages becoming independent of spacial separation; 5) Decreasing dishonesty; 6) Increase in "Synchronizations"; 7) Humans et al.(?). 
  Pure RBC: 1) Truthfulness (possibly 100%); 2) Stress very low; 3) Altruism becomes predominant; 4) Uses "Rhythm Based Time" (RBT) which remains always in the "present" (all RBT is "NowTime"); 5) Uses: declarative, interrogative, affirmative, negative, nouns, concepts but no syntax; 6) "Irreducible complexity" systems (*) can develop (for example as described by the biochemistry of: photosynthesis, cilium, bacterial flagellum, clotting of blood, cellular defense mechanisms et al., all examples of non evolutionary "complex systems"); 7) Darwinian and neo-Darwinian evolutionary theories are phased out; 8) Communication of emotions heightens to account for unexplained phenomena of the science of paranormal psychology; 9) Communication can become superluminal in RBT; 10) Metabolic rate reduces and thus life expectancy increases; 11) Survival mechanisms remain strong as organisms can revert rapidly (because of the nature of RBC) to above, stressful, evolutionary, survival states, when required. Thesis: Original communication, all organisms, all life. 
(*) Behe, Michael J., Darwin's Black Box, Touchstone (Simon & Schuster), New York, 1998.