Music Theory II Expansions

from T Rob's worksheet :)

I —> I⁶ expansions

• P, reversable: I (vii^o6) I⁶

• P, reversable: I (V^4/3) I⁶

• DN, reversable: I (V^4/3 V^4/2) I⁶

• N, NOT reversable: I (V^4/2) I⁶

I —> I expansions

• N, reversable: I (V^6/(5)) I

• N, reversable: I (V^4/3) I

• DN, reversable: I (V^6/5 V^4/3) I

I⁶ —> I expansions

• IN, NOT reversable: I⁶ (V^6/(5)) I

• DN, reverable: I⁶ (V^4/2 V^6/5) I

I⁶ —> I⁶ expansions

• N, reversable: I⁶ (V^4/2) I⁶

• N, reversable: I⁶ (V^4/3) I⁶

predominant reversible expansions

*all are passing

• ii (I⁶) ii⁶

• ii⁷ (I⁶) ii^6/5

• ii^6/5 ii^4/3

• IV IV⁶

predominant NONreversible expansions

*all are passing

• ii (I⁶) ii^6/5

• ii⁶ (I⁶) ii⁷

passing dominant expansions (all are reversable)

• V^6/5 (I) V^4/3

• V^4/3 (I⁶) V^4/2

• V⁽⁷⁾ (IV⁶) V^6/(5) (reverse in major keys only)

neighbor dominant expansions (all are reversable)

• V^6/(5) (I) V^6/(5)

• V^4/2 (I⁶) V^4/2

• V^4/3 (I⁽⁶⁾) V^4/3

is ii expansional?

NO

can be passing or neighbor, depending on the context (defer to soprano if bass is not clear)

• I⁽⁶⁾ (IV) I⁽⁶⁾

• I (IV⁶) I⁶ - bass descends, may substitute vi for IV⁶