I don’t know if this was the case when Russell @R_102 replied, but it’s no longer the case.
It’s available in the API but may not be documented.
Here’s an example for Sinéad O’Connor’s Mandinka.
I found the example thanks to this thread:
<- CONTINUE 2 LyricsChanged
{
"zone_id" : "160187bc7745777c31d9035b57893eea2a0a",
"key" : "a3003030322d323339393237",
"lrc" : "[00:14.80]I'm dancing the seven veils\n[00:18.94]Want you to pick up my scarf\n[00:22.36]See how the black moon fades\n[00:26.25]Soon I can give you my heart\n[00:43.84]I don't know no shame\n[00:46.46]I feel no pain\n[00:48.02]I can't see the flame\n[00:55.20]But I do know Man-din-ka\n[01:02.63]I do know Mandinka\n[01:09.94]I do know Mandinka\n[01:17.37]I do\n[01:22.81]\n[01:32.20]They're throwing it all this way\n[01:36.35]Dragging it back to the start\n[01:39.18]And they say, \"See how the glass is raised?\"\n[01:43.74]I have refused to take part\n[01:47.62]I told them, \"Drink something new\"\n[01:53.10]Please let me pull something through\n[02:01.21]I don't know no shame\n[02:04.02]I feel no pain\n[02:05.51]I can't\n[02:08.71]I don't know no shame\n[02:11.40]I feel no pain\n[02:12.85]I can't see the flame\n[02:19.99]But I do know Man-din-ka\n[02:27.63]I do know Mandinka\n[02:34.93]I do know Mandinka\n[02:42.25]I do\n[02:49.72]I do\n[02:57.08]I do\n[03:03.50]I said I do\n[03:06.78]Soon I can give you my heart\n[03:10.60]I swear I do\n[03:14.09]Soon I can give you my heart\n[03:18.96]I do\n[03:21.95]Mandinka\n[03:28.87]Soon I can give you my heart\n[03:36.28]Soon I can give you my heart\n[03:38.90]\n"
}