jatlh SuStel:
When TKD tells us that 'ej, pagh, and qoj conjoin sentences, what it really
means is that they conjoin like verbal clauses. Most rules that talk about
sentences also apply to verbal clauses. Some canonical examples of
conjoined non-main-verb-clause verbal clauses:
SuDbogh Dargh 'ej wovbogh the tea that is SuD and light (KGT) romuluSngan Sambogh 'ej HoHbogh nejwI' Romulan hunter-killer probe (KCD) pay' HIvDI' lo'wI' pagh mupDI' QIHchu' bIH. [literally:] when the user attacks suddenly or when he/she strikes, they damage completely (Skybox SP2) ...lengtaHvIS tlhInganpu' 'ej qo'mey Sar charghtaHvIS chaH... [literally:] ...while Klingons travel and while they conquer various worlds... (Skybox SP1)
So feel free to conjoin dependent clauses as well as main clauses with the
"sentence" conjunctions, including relative clauses.
I sounds like you would say that without the poetic licence, the line from the song should be: {yoHbogh SuvwI' 'ej matlhbogh}