diff --git a/src/db/migrations/20210311061107_create_audio_table.ts b/src/db/migrations/20210311061107_create_audio_table.ts
new file mode 100644
index 0000000..dbff1f6
--- /dev/null
+++ b/src/db/migrations/20210311061107_create_audio_table.ts
@@ -0,0 +1,13 @@
+import { Knex } from "knex";
+
+export async function up(knex: Knex) {
+  await knex.schema.createTable("recordings", (table) => {
+    table.bigInteger("messageId").primary().references("voicemails.messageId");
+    table.string("mimeType", 32);
+    table.binary("audio");
+  });
+}
+
+export async function down(knex: Knex) {
+  await knex.schema.dropTable("recordings");
+}
diff --git a/src/template.tsx b/src/template.tsx
index c60605e..21aca0c 100644
--- a/src/template.tsx
+++ b/src/template.tsx
@@ -1,8 +1,9 @@
 import React from "react";
 import ReactDOMServer from "react-dom/server";
-import type { Contact, StoredVoicemail } from "./types";
 import { getNationalNumber, formatSeconds } from "./util";
 import { DateTime } from "luxon";
+import type { Contact } from "./types";
+import type { StoredVoicemail } from "knex/types/tables";
 
 export function getTicketSubject(
   voicemail: StoredVoicemail,
diff --git a/src/ticketize.ts b/src/ticketize.ts
index 47e97b6..826873f 100644
--- a/src/ticketize.ts
+++ b/src/ticketize.ts
@@ -11,8 +11,8 @@ import type {
   RCAudioAttachment,
   Recording,
   Transcription,
-  StoredVoicemail,
 } from "./types";
+import type { StoredVoicemail, StoredRecording } from "knex/types/tables";
 
 const SEARCH_CONTACT_BY_PHONE_NUMBER_QUERY = gql`
   query getContactByPhoneNumber($phoneNumber: String!) {
@@ -168,8 +168,8 @@ export function ticketize(
     const response = await rcsdk.get(audio.uri);
     const result = {
       duration: audio.vmDuration,
-      mimetype: audio.contentType,
-      audio: await response.blob(),
+      mimeType: audio.contentType,
+      audio: await response.arrayBuffer(),
     };
     return result;
   }
@@ -193,7 +193,10 @@ export function ticketize(
    * @param voicemail
    * @param contact
    */
-  async function createTicket(voicemail: StoredVoicemail, contact?: Contact) {
+  async function createTicket(
+    voicemail: StoredVoicemail & StoredRecording,
+    contact?: Contact
+  ) {
     const input: any = {
       subject: getTicketSubject(voicemail, contact),
       description: getTicketBody(voicemail, contact),
@@ -229,29 +232,38 @@ export function ticketize(
     recording: Recording,
     transcription: Transcription
   ) {
-    return db<StoredVoicemail>("voicemails").insert({
-      messageId: message.id,
-      extensionId: message.extensionId,
-      received: message.creationTime,
-      toNumber: message.to[0].phoneNumber,
-      extensionNumber: extension.extensionNumber,
-      extensionName: extension.name,
-      fromNumber: message.from.phoneNumber,
-      fromName: message.from.name,
-      duration: recording.duration,
-      transcriptionStatus: transcription.status,
-      transcription: transcription.text,
+    await db.transaction(async (trx) => {
+      await trx("voicemails").insert({
+        messageId: message.id,
+        extensionId: message.extensionId,
+        received: message.creationTime,
+        toNumber: message.to[0].phoneNumber,
+        extensionNumber: extension.extensionNumber,
+        extensionName: extension.name,
+        fromNumber: message.from.phoneNumber,
+        fromName: message.from.name,
+        duration: recording.duration,
+        transcriptionStatus: transcription.status,
+        transcription: transcription.text,
+      });
+      await trx("recordings").insert({
+        messageId: message.id,
+        mimeType: recording.mimeType,
+        audio: new Uint8Array(recording.audio),
+      });
     });
   }
 
   /**
-   * Updates a stored voicemail using its current properties
+   * Updates a stored voicemail
    * @param voicemail the voicemail to update
    */
-  async function updateStoredVoicemail(voicemail: StoredVoicemail) {
-    await db<StoredVoicemail>("voicemails")
-      .update({ ...voicemail })
-      .where({ messageId: voicemail.messageId });
+  async function updateStoredVoicemail(voicemail: Partial<StoredVoicemail>) {
+    const messageId = voicemail.messageId;
+    if (!messageId) {
+      throw new Error("Missing required messageId property");
+    }
+    await db("voicemails").update(voicemail).where({ messageId });
   }
 
   /**
@@ -259,9 +271,7 @@ export function ticketize(
    * @returns whether the message by the given ID has been stored
    */
   async function isMessageStored(messageId: number) {
-    const result = await db<StoredVoicemail>("voicemails")
-      .where({ messageId })
-      .first();
+    const result = await db("voicemails").where({ messageId }).first();
     return result !== undefined;
   }
 
@@ -269,7 +279,8 @@ export function ticketize(
    * @returns stored voicemails that haven't had tickets created for them yet
    */
   async function getUnprocessedVoicemails() {
-    return await db<StoredVoicemail>("voicemails")
+    return await db("voicemails")
+      .join("recordings", "voicemails.messageId", "recordings.messageId")
       .whereNull("ticketId")
       .whereIn("transcriptionStatus", [
         "Completed",
@@ -283,7 +294,7 @@ export function ticketize(
    * @returns stored voicemails whose trranscriptions may still be in progress
    */
   async function getMissingTranscriptionVoicemails() {
-    return await db<StoredVoicemail>("voicemails")
+    return await db("voicemails")
       .whereNotNull("transcription")
       .whereNotIn("transcriptionStatus", [
         // Don't include those whose transcriptions have failed or will not
@@ -366,7 +377,11 @@ export function ticketize(
           // else we do nothing
           return;
         }
-        return updateStoredVoicemail(message);
+        return updateStoredVoicemail({
+          messageId: message.messageId,
+          transcriptionStatus: message.transcriptionStatus,
+          transcription: message.transcription,
+        });
       })
     );
   }
@@ -385,7 +400,7 @@ export function ticketize(
           `Created ticket ${ticketId} from voicemail ${voicemail.messageId}`
         );
         return updateStoredVoicemail({
-          ...voicemail,
+          messageId: voicemail.messageId,
           ticketId,
           contactId: contact?.id,
           contactableType: contact?.contactable.__typename,
diff --git a/src/types.ts b/src/types.ts
index a0ed5ff..fdcfa1a 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -97,8 +97,8 @@ export interface RCMessage {
 
 export interface Recording {
   duration: number;
-  mimetype: string;
-  audio: Blob;
+  mimeType: string;
+  audio: ArrayBuffer;
 }
 
 export interface Transcription {
@@ -106,21 +106,33 @@ export interface Transcription {
   text: string | null;
 }
 
-export interface StoredVoicemail {
-  messageId: number;
-  extensionId: number;
-  processed: boolean;
-  received: string;
-  toNumber: string;
-  extensionNumber: string;
-  extensionName: string;
-  fromNumber: string;
-  fromName?: string;
-  duration: number;
-  transcriptionStatus: TranscriptionStatus;
-  transcription: string | null;
-  ticketId?: number;
-  contactId?: number;
-  contactableType?: string;
-  contactableId?: number;
+declare module "knex/types/tables" {
+  interface StoredVoicemail {
+    messageId: number;
+    extensionId: number;
+    received: string;
+    toNumber: string;
+    extensionNumber: string;
+    extensionName: string;
+    fromNumber: string;
+    fromName: string;
+    duration: number;
+    transcriptionStatus: TranscriptionStatus;
+    transcription: string | null;
+    ticketId?: number;
+    contactId?: number;
+    contactableType?: string;
+    contactableId?: number;
+  }
+
+  interface StoredRecording {
+    messageId: number;
+    mimeType: string;
+    audio: ArrayBuffer;
+  }
+
+  interface Tables {
+    voicemails: StoredVoicemail;
+    recordings: StoredRecording;
+  }
 }