dbot/modules/lastfm/strings.json

{
    "now_listening": {
        "en": "{user} is listening to {track} by {artist}"
    },
    "last_listened": {
        "en": "{user} last listened to {track} by {artist}"
    },
    "no_listen": {
        "en": "{user} doesn't seem to have listened to anything recently :'("
    }
}