How can I run mpv as a detached process on files selected by fzf?

I have the following function

play-music()
{
    local selected=$(find "${PWD}" -mindepth 1 -maxdepth 1 -type f -iname "*.mp3" | LC_COLLATE=C sort | fzf)

    local processed=""
    while IFS= read -r line; do
        processed+="$line\n"
    done <<< "$selected"

    echo -e "${processed}" | xargs -d '\n' mpv # How to execute this line as a detached process without showing any message from mpv in the terminal
}

This function works, but as long as mpv is playing, it is showing the mpv messages in the terminal and I can't close the terminal. So, is there a way to execute the last line as a detached process? So that it won't show any mpv messages in the terminal and I can close the terminal, if I want, after mpv has started playing the files?

For example, the following doesn't work

echo -e "${processed}" | xargs -d '\n' mpv </dev/null &>/dev/null & disown

echo -e "${processed}" | xargs -d '\n' mpv

could become:

(
    set +m
    exec &>/dev/null </dev/null
    echo -e "${processed}" | xargs -d '\n' mpv &
    disown
)

or specifically for mpv:

(
    set +m;
    echo -e "${processed}" | xargs -d '\n' mpv --no-terminal & 
    disown
)