mpv can't play cdrom

entering this command mpv cdda:// starts to spin the music cd I've inserted previously but 3 secs later quits giving me this output.

(+) Audio --aid=1 (pcm_s16le 2ch 44100Hz)
[cdda] Switched to track 1
AO: [alsa] 48000Hz stereo 2ch s16
A: 00:00:00 / 00:00:00 (92%) Cache: 0.0s


Exiting... (End of file)