Joey Tang vs. Joey Tang?

Tricky one here. 
In figuring out the composers of the music for THE WARNING TIME (2000), and trying to deduce who performs the theme song, I think I found a boo-boo in the DB.
"Original Music" in THE WARNING TIME is credited to Joey Tang and Patrick Liu, as per this screen:

The theme song is performed by a group called ?? (Arctic? Doesn't ring a bell . . .
)
This group seems to be comprised of ???, or Tang Kin-ming (aka JOEY TANG) and ???, or Liu/Lau Yin-tak, who I'm betting is Patrick Liu.

Here's the problem. In Joey Tang Kin-ming's DB entry, at least one film, LOVE @ FIRST NOTE (2006), identifies the performer as a girl ("herself").
http://hkmdb.com/db/people/view.mhtml?i ... ay_set=eng
According to a search at YesAsia, Joey Tang Kin-ming is a dude:
http://www.yesasia.com/global/lost-prop ... /info.html
More albums at Buyoyo:
http://www.buyoyo.com/buyoyo/eng/Produc ... 3&prtype=4
http://www.buyoyo.com/buyoyo/eng/Produc ... 5&prtype=4
Here he is live in concert:
http://www.youtube.com/watch?v=5GNRti8hd1Y
and in a music video duet with Dennie Wong (who can now be ID'd as a female in the DB
):
http://www.youtube.com/watch?v=I-25EPYEA6o
The singer of the theme song for THE WARNING TIME is also a dude. And he sounds a LOT like the guy in those videos.
I seem to (vaguely) recall a Joey Tang in LOVE @ FIRST NOTE, possibly one of the young female singers who goes unnamed in the picture gallery for that film, such as this gal, possibly? (can't say for sure)
http://hkmdb.com/db/movies/image_detail ... ay_set=eng
So I'm wondering if there needs to be a split. I may need to skim the credits of LOVE @ FIRST NOTE to see if the male Joey Tang might be in that film after all.

In figuring out the composers of the music for THE WARNING TIME (2000), and trying to deduce who performs the theme song, I think I found a boo-boo in the DB.
"Original Music" in THE WARNING TIME is credited to Joey Tang and Patrick Liu, as per this screen:

The theme song is performed by a group called ?? (Arctic? Doesn't ring a bell . . .

This group seems to be comprised of ???, or Tang Kin-ming (aka JOEY TANG) and ???, or Liu/Lau Yin-tak, who I'm betting is Patrick Liu.

Here's the problem. In Joey Tang Kin-ming's DB entry, at least one film, LOVE @ FIRST NOTE (2006), identifies the performer as a girl ("herself").
http://hkmdb.com/db/people/view.mhtml?i ... ay_set=eng
According to a search at YesAsia, Joey Tang Kin-ming is a dude:
http://www.yesasia.com/global/lost-prop ... /info.html
More albums at Buyoyo:
http://www.buyoyo.com/buyoyo/eng/Produc ... 3&prtype=4
http://www.buyoyo.com/buyoyo/eng/Produc ... 5&prtype=4
Here he is live in concert:
http://www.youtube.com/watch?v=5GNRti8hd1Y
and in a music video duet with Dennie Wong (who can now be ID'd as a female in the DB

http://www.youtube.com/watch?v=I-25EPYEA6o
The singer of the theme song for THE WARNING TIME is also a dude. And he sounds a LOT like the guy in those videos.
I seem to (vaguely) recall a Joey Tang in LOVE @ FIRST NOTE, possibly one of the young female singers who goes unnamed in the picture gallery for that film, such as this gal, possibly? (can't say for sure)
http://hkmdb.com/db/movies/image_detail ... ay_set=eng
So I'm wondering if there needs to be a split. I may need to skim the credits of LOVE @ FIRST NOTE to see if the male Joey Tang might be in that film after all.