I think sillybunny pretty much explained it all, but since I'm familiar with the entire album Ten Summoner's Tales, I think I get the whole story.
In the prequel song "Love Is Stronger Than Justice (The Munificent Seven)", there are seven brothers who all share the same father, but their mothers are different. The song takes the first-person perspective of one of the brothers. He says that he and his brothers ended up in Mexico where a town is pleading them to help take down a bunch of bandits threatening their town. They are promised beautiful women if they help, but when the brother finds out there's only one woman in the town after they've saved the city from the bandits, he plots to kill his brothers. The song never explains how he kills them, but the song does confirm that they're dead. ("And though there used to be brothers seven, the other six are singing in Heaven.") This song is also interesting in that it is in a 7/4 time signature. (Except in the chorus, which is normal 4/4 time.)
So I think in This Cowboy Song, especially in the second verse, he regrets killing them, as well as other poor life choices that he made. He thinks about becoming Christian, except he believes that not even Christ himself would accept him after the horrible atrocities he's committed. However, he has "This Cowboy Song" to sing which helps him to feel better. He feels the song gets him closer to whoever or whatever is in control of the afterlife.
Additionally, some little trivia people might be interested in. According to my Japanese copy of Ten Summoner's Tales, the prequel song is based on an Akira Kurosawa film, or at least a spoof of the name "The Magnificent Seven".
I think sillybunny pretty much explained it all, but since I'm familiar with the entire album Ten Summoner's Tales, I think I get the whole story.
In the prequel song "Love Is Stronger Than Justice (The Munificent Seven)", there are seven brothers who all share the same father, but their mothers are different. The song takes the first-person perspective of one of the brothers. He says that he and his brothers ended up in Mexico where a town is pleading them to help take down a bunch of bandits threatening their town. They are promised beautiful women if they help, but when the brother finds out there's only one woman in the town after they've saved the city from the bandits, he plots to kill his brothers. The song never explains how he kills them, but the song does confirm that they're dead. ("And though there used to be brothers seven, the other six are singing in Heaven.") This song is also interesting in that it is in a 7/4 time signature. (Except in the chorus, which is normal 4/4 time.)
So I think in This Cowboy Song, especially in the second verse, he regrets killing them, as well as other poor life choices that he made. He thinks about becoming Christian, except he believes that not even Christ himself would accept him after the horrible atrocities he's committed. However, he has "This Cowboy Song" to sing which helps him to feel better. He feels the song gets him closer to whoever or whatever is in control of the afterlife.
Additionally, some little trivia people might be interested in. According to my Japanese copy of Ten Summoner's Tales, the prequel song is based on an Akira Kurosawa film, or at least a spoof of the name "The Magnificent Seven".