Reneé Rapp sings about the trials of trusting oneself and the tribulations of communicating with others on her debut album, “Snow Angel.” In other words: She waits by a phone and hopes that it rings, she overthinks and knows it, writes The Associated Press' Elise Ryan. The album’s 12 tracks — with lyrics navigating relationships, sexuality, growing up and those themes' accompanying anxieties — oscillate between shimmery, upbeat pop and robust ballads. The tracks are cathartic, at times tragic and at others, knowingly petty. The thematic and sonic range combines into a worthy debut for an artist with an already-proven versatility. “Snow Angel” is out Friday.