Songs start sooner and play on to the next.

Signed in, a song starts playing as soon as the first part of its audio arrives, instead of waiting for the whole song. Play turns to Pause at once.

Each stem’s waveform shows how much has loaded, and lights up as it arrives.

Stems now play at YouTube’s own loudness, so switching between the video’s sound and the stems no longer jumps in volume, and a Free split stays level when its 2:00 window ends.

In a list, a YouTube song that plays to its end goes to the next song by itself.