Matsumoto from bleach hasn't showed her bankai yet, but she probably don't have Any yet. In the anime its only all the captain's but not Zaraki, Aberai Renji, Ikkaku Madarame, Kisuke Urahara, Aizen Sosuske, Ichimaru Gin, Kaname Tosen, Vizart and Kuroski Ichigo who have a bankai yet.
Episode 44: Ishida Power of Limits!
Shikai (First Release): Episode 20 Bankai (Final Release): Episode 58
if you mean that music when gin uses his bankai that is episode 300 citadel of the bound
Shikai: Hyorinmaru Bankai: Daiguren Hyorinmaru
Hinamori hasn't achieved bankai yet, just shikai.
Ichigo first uses his Bankai in episode 29 of Bleach, titled "The 2nd Division Sorties! Ichigo is Surrounded."
Episode 44: Ishida Power of Limits!
Shikai (First Release): Episode 20 Bankai (Final Release): Episode 58
Kurosaki Ichigo learns Bankai in the Soul Society Arc. To be more specific, he officially gets his Bankai in episode 54.
if you mean that music when gin uses his bankai that is episode 300 citadel of the bound
Ichigo achieves his bankai in episode 51, Morning of the Sentence. With the help from Kisuke's method that he himself used to achieve his bankai, and special training instructions from Yoruichi Shihouen
mayuri breathes poison because his bankai's poison comes from his own blood
You need level 4 Soukatsui for Bankai, my sword is the best, its called bailing, epic bankai.
Although some Shinigami posses different stages of bankai, there is no level higher than bankai.
Shikai: Hyorinmaru Bankai: Daiguren Hyorinmaru
Ukitake's Bankai hasn't been revealed yet, only his shikai has.
he does he says "shoot to kill, shinso" and it literally shoots to kill. i don't know if that is his bankai or if his bankai is when his sword turns to dust. The sword pieces have poison in them, so they kill the opponent...i dunno which one is the actual bankai, but i hope it helped :)