The Talmud uses singing as an indicator of spiritual vitality — those who say songs in this world merit to say song in the World to Come, connecting melody with eschatological reward.
אָמַר רַבִּי יְהוֹשֻׁעַ בֶּן לֵוִי: מִנַּיִין לִתְחִיַּית הַמֵּתִים מִן הַתּוֹרָה? שֶׁנֶּאֱמַר: ״אַשְׁרֵי יוֹשְׁבֵי בֵיתֶךָ עוֹד יְהַלְלוּךָ סֶּלָה״. ״הִילְּלוּךְ״ לֹא נֶאֱמַר, אֶלָּא ״יְהַלְלוּךָ״ – מִכָּאן לִתְחִיַּית הַמֵּתִים מִן הַתּוֹרָה. וְאָמַר רַבִּי יְהוֹשֻׁעַ בֶּן לֵוִי: כׇּל הָאוֹמֵר שִׁירָה בְּעוֹלָם הַזֶּה זוֹכֶה וְאוֹמְרָהּ לָעוֹלָם הַבָּא, שֶׁנֶּאֱמַר: ״אַשְׁרֵי יוֹשְׁבֵי בֵיתֶךָ עוֹד יְהַלְלוּךָ סֶּלָה״. אָמַר רַבִּי חִיָּיא בַּר אַבָּא אָמַר רַבִּי יוֹחָנָן: מִנַּיִין לִתְחִיַּית הַמֵּתִים מִן הַתּוֹרָה? שֶׁנֶּאֱמַר: ״קוֹל צֹפַיִךְ נָשְׂאוּ קוֹל יַחְדָּו יְרַנֵּנוּ וְגוֹ״. ״רִינְּנוּ״ לֹא נֶאֱמַר, אֶלָּא ״יְרַנֵּנוּ״ – מִכָּאן לִתְחִיַּית הַמֵּתִים מִן הַתּוֹרָה. וְאָמַר רַבִּי חִיָּיא בַּר אַבָּא אָמַר רַבִּי יוֹחָנָן: עֲתִידִין כׇּל הַנְּבִיאִים כּוּלָּן אוֹמְרִים שִׁירָה בְּקוֹל אֶחָד, שֶׁנֶּאֱמַר: ״קוֹל צֹפַיִךְ נָשְׂאוּ קוֹל יַחְדָּו יְרַנֵּנוּ״.
Rabbi Yehoshua ben Levi says: From where is resurrection of the dead derived from the Torah? It is derived from a verse, as it is stated: “Happy are they who dwell in Your house; they will yet praise You, Selah” (Psalms 84:5). It is not stated: They praised you, in the verse; rather, the term “they will praise you” is stated. From here, resurrection of the dead is derived from the Torah. And Rabbi Yehoshua ben Levi says: Anyone who recites song to God in this world is privileged and recites it in the World-to-Come, as it is stated: “Happy are they who dwell in Your house; they will yet praise You, Selah.” Rabbi Ḥiyya bar Abba says that Rabbi Yoḥanan says: From where is resurrection of the dead derived from the Torah? It is derived from a verse, as it is stated: “Your watchmen, they raise the voice; together shall they sing, for they shall see eye to eye the Lord returning to Zion” (Isaiah 52:8). It is not stated: They sang, in the verse; rather, the term “together shall they sing” is stated. From here resurrection of the dead is derived from the Torah. And Rabbi Ḥiyya bar Abba says that Rabbi Yoḥanan says: All the prophets are all destined to recite song in one voice, as it is stated: “Your watchmen, they raise the voice; together shall they sing.”