Toaster 0.4.20

A Doom fire, an old TV, the bass line by the beat, and the right tempo from the start.

• Fire, a new background (V). The old Doom fire in square pixels, lit by the song: the song sets how high it burns, the kick lifts it, the hats spit sparks, and on every drop the flames leap up and die back.
• CRT (Y). An old TV over everything: it comes on from a white line and goes off into a dot, slips into static on the drop, and every background is a channel, its number in the corner.
• Every kick, under a held bass. A kick that lands on a beat while the bass note rings on used to be heard as part of the note, so house and disco lines kept a beat missing. Now, once two of the bar's beats are kicks, a hit on a beat under a held note joins them: across our test songs the kick line shows 72% of the beats it should (up from 64%), and a clean four on the floor twice as often.
• The right tempo from the start. A syncopated intro (a riff in dotted 8ths, say) used to lock a third too fast and stay there for 15 to 40 seconds, or all song in Starboy's case. Now the first lock checks where the song's bars repeat: Gypsy Woman, Sunset Lover, Starships, Starboy and Saturn lock at their own tempo from the start, or come right in half the time.
• The bass line by the beat. The code used to give the bass one note a bar, and that note matched what the bass was playing about half the time. A new tracker follows the bass's pitch all the way through, and where the bass moves within a bar the code writes each note as it plays (Show Me Love: <[d2 f2 a1@2] [bb1@3 a1]>). Across our test songs the code's bass notes now match the song's about 83% of the time, up from 52%. The blocks and the song export (X) follow it too.

Windows: if you have 0.3.9 or later, Toaster offers this update by itself. Otherwise:

1. Download Toaster-0.4.20-win-x64.zip.
2. Unzip it anywhere and double-click Toaster.exe.
3. The first time, Windows may say "Windows protected your PC" because the app isn't signed. Click More info, then Run anyway.

Mac: download Toaster-0.4.20-mac-universal.zip (it's built and added here a few minutes after the release), unzip it and drag Toaster into Applications. The first time, open System Settings → Privacy & Security and click Open Anyway.

In a browser: toaster.locust.lol, nothing to install.