slowing songs down in audacity: open the sound file in audacityselect the entire track (control-a or cmd-a)open Effects menu ⇒ Pitch and Tempo ⇒ Change Speed and Pitchi use 45 ⇒ 33 but whatever works for youto add reverb: (optional) add a couple of silence to the end: open Generate menu ⇒ Silenceopen Effects menu ⇒ Delay and Reverb ⇒ Reverbplay with the fields or use the presets menu ⇒ select a presetthe table in the docs describes each reverb setting and what the presets do.