Here's the first thing you see when you open the YouTube Music app.

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It automatically recognizes the Google accounts you're logged into on your phone and let's you quickly sign in.

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Then you're prompted to begin a free 14-day trial of YouTube Red, which removes all ads on YouTube and gives you some other perks.

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Here's my YouTube Music home page. The app gave me some music station suggestions based on videos I've already watched on YouTube.

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Scroll down for recommended videos based on what you've watched already.

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The app also shows past plays of yours on YouTube.

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The middle tab of YouTube Music shows you the hottest music for the day, including "The Daily 40" playlist of the most popular music videos right now.

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You can browse new music by genre.

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And see individual videos that are currently trending.

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You can like songs to have them show up here.

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Switching this tab to the headphones icon turns the app into audio-only mode, which means videos won't play and less data will be used.

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The app's settings let you switch Google accounts, view your offline mixtape (we'll get to that in a second), view recently played videos, and more.

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Here's what the settings look like. The app will only download songs for offline access over Wi-Fi by default, but you can override that behavior.

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How YouTube Music decides to surface music can feel strange. For instance, one of the first videos I was presented with was this poor quality video someone shot on their phone at a concert.

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When you're playing a video (I had audio-only mode enabled), you can see some related videos by scrolling down.

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The "Explore" tab shows even more videos you may like, usually from the same channel.

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When you like a video with a thumbs up, YouTube learns to give you better suggestions.

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One of the most interesting parts of the app is the offline mixtape. It finds music for you and lets you save it all for offline playback.

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The main issue I ran into with YouTube Music is that playing music videos in audio-only mode still included the music video version of the audio track. In the case of this Adele song, that includes distracting background noise and some talking.

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The same thing happened with the "Hotline Bling" video, which has a special intro with talking before the actual song plays.

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You can adjust the quality of video playback, enable closed captions, and report it to YouTube.

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And send a video link via iMessage, Twitter, and the other apps you have installed on your phone.

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If you're playing videos in a station, you can adjust the kind of variety of suggestions you want to get.

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The app can automatically keep playing videos related to what you've been watching or listening to, which makes for a pretty hands-free listening experience.

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If you're watching a video and minimize it in the app or leave the app altogether, it will keep playing just the audio in the background.

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Here's what audio playback looks like from the iPhone's lock screen.

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YouTube Music isn't for everyone. It can be kind of confusing to use, but if you're a YouTube junkie, hate ads, and want to be able to switch seamlessly between watching music videos and listening to music, you should check it out.

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