Syntax: "All the small things" is a noun phrase where "all" is a determiner, "the" is a definite article, and "small things" is a noun modified by an adjective. "True care, truth brings" uses parallelism and inversion - the normal word order would be "True care brings truth."
Morphology: "Things" is the plural form of "thing." "Brings" is the third person singular present tense of "bring." "True" is an adjective modifying "care."

Syntax: "Always I know" uses adverb fronting for emphasis (normal order: "I always know"). "You'll be at my show" is a simple future tense sentence with "you'll" as the contraction of "you will."
Morphology: "Always" is an adverb of frequency. "Know" is the base form of the verb. "You'll" is a contraction of "you will." "Watching" and "waiting" are present participles functioning as verbs.

Syntax: "Watching, waiting" are present participles used as verbs in a series. "Commiserating" continues this pattern. This creates a sense of ongoing action.
Morphology: "Watching" is the present participle of "watch." "Waiting" is the present participle of "wait." "Commiserating" is the present participle of "commiserate." All end in "-ing," indicating continuous action.

Syntax: "Say it ain't so" is an imperative sentence (command form). "I will not go" is a simple future negative declaration. "Ain't" is colloquial for "is not" or "are not."
Morphology: "Say" is the base form of the verb in imperative mood. "Ain't" is a non-standard contraction. "Will" is a modal verb indicating future intention. "Go" is the base form of the verb.

Syntax: "Late night, come home" uses noun phrase + verb phrase structure without a subject (implied "I"). "Work sucks, I know" is two independent clauses joined by a comma (comma splice in informal language).
Morphology: "Late" is an adjective modifying "night." "Come" is the base form of the verb. "Sucks" is third person singular present tense of "suck" (slang for "is bad"). "Know" is the base form of the verb.