Which music streaming service is the least expensive?

(NEXSTAR) — Earlier this week, Apple announced its music streaming service, Apple Music, would raise its monthly individual subscription price by $1 — becoming the latest of several services to increase prices recently.Spotify chief: Ye antisemitic comments were ‘awful,’ but music won’t be pulledIn a statement to CNBC, Apple said the increase was a response to "an increase in licensing costs," in addition to supporting "innovative features."
While most recent price