Possible Clues:

• 'So to make a song about tea are not for one week, by the sound of it (6)'
• Powerful tenor ends in tune
• Like an ox
• Like 80 proof liquor
• Powerful aria inhibits tenor extremely
• Buff, so to speak
• Sounds as if you could never have this for a week
• Robust and muscular
• Not for a week, by the sound of it, will you get singing around the right turn
• There's a right turn in the song, but not for a week, by the sound of it