In his article Group quasi-representations and index theory (p. 11), Dadarlat claims that a *-representation $\phi_1\colon C(Y)\to L(H)$ of a commutative C*-algebra "is a compact perturbation of a *-representation of $C(Y)$ which is a direct sum of one-dimensional representations" by Voiculescu's theorem. How does this work?

The version of Voiculescu's theorem that I know is the one given in the book by Higson and Roe, *analytic K-homology* on page 63, and it states that if $\rho\colon E\to L(H)$ is a non-degenerate representation of a unital separable C*-algebra, and $\sigma\colon E\to L(H')$ is a completely positive map which vanishes on the pre-image of the compact operators under $\rho$, then $\sigma$ is, up to compact perturbation, equal to $V^*\rho V$, for $V\colon H'\to H$ an isometry.

Is this the right theorem to use here, and if so, how does the proof go?