Hi, I play a bard. I tried teach another bard some lyrics and I noticed I couldn't. I think bardic teaching is bugged. I noticed also that songs of sleep are master level songs and songs of silence are mentor level songs. It was the reverse before. I suspect that this bug emerged when they were switched. Here is a series of logs showing me trying to teach song lyrics to another bard and teaching instead the song. 
Code:
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> say what countersong lyric do you know? 
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> You say 'what countersong lyric do you know? '
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> 
Mioni says 'teach me  songs of antimagic'
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> teach mio 'songs of antimagic' 0
You prepare to teach Mioni.
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> 
You say to Mioni 'You can't learn anymore of 'songs of antimagic' here.'
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> 
Mioni says 'When Songs Do Battle'
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> songs
Amateur   - songs of protection             (mastered)    
            Bind Me In Music's Safety       Unaffected By Thy Hand          
            Dark Shall Rule The Realms      The Miner's Saint               
            Oh, Guardians Of Old            Fear Not The Flame              
            Armor Of Song And Might         Pointy Things                   
            songs of war                    (mastered)    
            From The Shadows                To Live In Gloried Song         
            Away! Away!                     Beat the Drums!                 
            Slash, Stab, Rend, Smash        The Crash Of Battle             
            Soldier Go                      
            c major                         (mastered)    
Novice    - songs of healing                (mastered)    
            We Have Need                    River, O River                  
            Truest Wealth                   Flesh And Bone                  
            All Yon Childe                  The Gift Of The Song            
Initiate  - songs of death                  (mastered)    
            When Death Comes                In That Solitude                
            Mock of Death                   Through The Night               
            The Hammer Falls                Shorten Their Time              
            Tale of Jason Alavern           Solemn Shade                    
Apprentice- f minor                         (superb)      
(C)ontinue - (R)efresh - (B)ack - (H)elp - (Q)uit [RETURN]:
            songs of antimagic              (mastered)    
            Playing With Fire               Magic's Fall                    
            Eldritch Blight                 Strange Happenstance            
Journeyman- countersongs                    (mastered)    
            The Traveller's Song            A Curse To Rhythm               
            When Songs Do Battle            The Arrogant Bard               
            Lute Strings Snap               
Veteran   - songs of dancing                (mastered)    
            Lift Your Feet                  Hi Dee Ho Di Hi Dee Hay         
            The Madness Of Music            Wee Lad Wiggun                  
            Dance Again Before The End      
Expert    - b augmented sixth               (superb)      
            songs of magic                  (superb)      
            Yon Magical Twister             Mystical Energies               
            Mistress Magic                  Spells Of Power                 
Mentor    - songs of silence                (good)        
            In A Quiet Library              
Master    - songs of sleep                  (mastered)    
            Slow Moon Over Zhenshi          The Soothesayer                 
            Relentless Sleep                Peaceful Release                
            This Idyllic Scene              Powers of Song                  
(C)ontinue - (R)efresh - (B)ack - (H)elp - (Q)uit [RETURN]:t
            Done Now Be                     
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> 
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> Tell whom what?
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> teach mio 'the travel' 0
You prepare to teach Mioni.
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> 
You say to Mioni 'Here is zero in change.'
You teach countersongs!
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> 
You say to Mioni 'Here is zero in change.'
You teach countersongs!
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> 
You say to Mioni 'Here is zero in change.'
You teach countersongs!
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> 
You say to Mioni 'Here is zero in change.'
You teach countersongs!
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> 
You say to Mioni 'Here is zero in change.'
You teach countersongs!
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> 
You say to Mioni 'Here is zero in change.'
You teach countersongs!
You say to Mioni 'I've taught you everything I know about 'countersongs'.'
You stop teaching.
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> 
Mioni smiles.
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> say ooc this is bugged big time
You say 'ooc this is bugged big time'
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> 
As I understand it bards can teach any level of song lyric, but they can not teach songs or skills above apprentice level. Like any other class. If that has changed then disregard this thread but if it hasn't then there is a serious bug. Just so we are clear when I was teaching 'the travel' What I was supposed to be teaching was the lyric the traveller's song not actual countersongs.